John Deere Fault Codes List: Troubleshooting Your Equipment (2023) - InsideYard (2024)

As a John Deere equipment owner, you know how important it is to keep your machines in top shape to ensure maximum performance and longevity. But no matter how well you maintain your equipment, issues can still arise, and when they do, it’s essential to be able to troubleshoot and diagnose the problem quickly and accurately.

That’s where having aJohn Deere fault codes listcan come in handy. In this article, we’ll provide you with a comprehensive guide to understandingfault codes and how to use them to diagnose and fix issueswith your John Deere equipment.

What Are John Deere Fault Codes?

John Deere, fault codes list are diagnostic messages that indicate an issue with a specific component or system within your equipment. When a fault code is triggered, it sends a signal to the machine’s computer, which then illuminates a warning light on the instrument panel and stores the code in its memory.

By reading the code, you can determine the specific component or system that’s experiencing an issue and take the necessary steps to troubleshoot and repair it.

Understanding John Deere Fault Code Formats

John Deere fault codes come in a variety of formats, depending on the type of machine and the specific component or system that’s experiencing an issue. Some of the most common formats included in john Deere fault codes list are:

• SPN (Suspect Parameter Number):This format is used for engine-related fault codes and provides information about the specific component or system that’s experiencing an issue.
• FMI (Failure Mode Indicator):This format provides information about the severity of the issue and can help you determine whether the problem requires immediate attention or if it can wait until your next maintenance interval.
• OC (Occurrence Count):This format indicates how many times the fault code has been triggered and can help you determine whether the issue is a one-time occurrence or a recurring problem.

Using a John Deere Fault Codes List to Troubleshoot Your Equipment

When a fault code is triggered on your John Deere equipment, the first step is to consult your machine’s manual to determine the meaning of the code. You can also use aJohn Deere fault codes listto help you decipher the code and determine the appropriate course of action.

To use a John Deere fault codes list, follow these steps:

Identify the fault code:

Look for the fault code on your machine’s instrument panel or consult the machine’s manual to determine the code.

Find the code in the list:

Locate the code in the John Deere fault codes list and read the associated description and troubleshooting steps.

Follow the troubleshooting steps:

Use the steps provided in the fault code description to troubleshoot and diagnose the issue.

Repair the issue:

Once you’ve identified the problem, repair or replace the affected component or system to resolve the issue.

Common John Deere Fault Codes and Their Meanings

Here are some of the most commonJohn Deere fault codes listyou may encounter and their meanings. These are john Deere SPN codes list:

1. SPN 51 FMI 2: Engine Oil Pressure Low – Most likely caused by low oil pressure or a faulty oil pressure sensor. Check the oil level and pressure, and replace the sensor if necessary.
2. SPN 627 FMI 2: Engine Coolant Level Low – Indicates that the engine’s coolant level is low. Check the coolant level and refill as necessary.
3. SPN 94 FMI 3: Fuel Pressure Voltage High – Indicates a high voltage in the fuel pressure circuit. Check the wiring and connections and replace the fuel pressure sensor if necessary.
4. SPN 1569 FMI 31: Engine Protection Torque Derate – This indicates that the engine is operating at a reduced power output due to an issue with the after-treatment system. Check the after-treatment system for any faults, such as a blocked DPF (Diesel Particulate Filter), and resolve the issue before continuing to operate the engine.
5. SPN 520192 FMI 2: Hydraulic Oil Temperature Sensor Circuit – Indicates a problem with the hydraulic oil temperature sensor circuit. Check the wiring and connections and replace the sensor if necessary.
6. SPN 132 FMI 14: Engine Crankshaft Position Sensor Rate of Change – Indicates a problem with the engine’s crankshaft position sensor. Check the sensor and wiring, and replace them if necessary.
7. SPN 65535 FMI 31: Special Instructions – Indicates that the engine has a special instruction or message for the operator. Check the engine display or operator’s manual for further information.
8. These are just a few of the many fault codes that you may encounter while using a John Deere machine. It’s important to always consult the operator’s manual or a certified technician for assistance in resolving any issues or faults.
9. SPN 51 FMI 2: Engine Oil Pressure Low – This code indicates that the engine’s oil pressure is low, which can be caused by a faulty oil pressure sensor or low oil level. Check the oil level and pressure, and replace the sensor if necessary.
10. SPN 91 FMI 2: APP1 and APP2 Voltage – This indicates that there is an issue with the accelerator pedal position sensors. Check the wiring and connections, and replace the sensor if necessary.
11. SPN 94 FMI 3: Fuel Pressure Voltage High – Indicates a high voltage in the fuel pressure circuit, which can be caused by a faulty fuel pressure sensor or wiring issue. Check the wiring and connections, and replace the sensor if necessary.
12. SPN 157 FMI 3: Engine Brake Actuator Circuit – This indicates a problem with the engine brake actuator circuit, which can be caused by a faulty actuator or wiring issue. Check the wiring and connections, and replace the actuator if necessary.
13. SPN 4752 FMI 7: DPF Pressure Out of Range – This code indicates that the DPF (Diesel Particulate Filter) is experiencing high-pressure levels. Check the DPF for any blockages or faults, and resolve the issue before continuing to operate the machine.
14. SPN 627 FMI 2: Engine Coolant Level Low – Indicates that the engine’s coolant level is low, which can cause the engine to overheat. Check the coolant level and refill as necessary.
15. SPN 65535 FMI 31: Special Instructions – Indicates that the engine has a special instruction or message for the operator. Check the engine display or operator’s manual for further information.
16. SPN 132 FMI 14: Engine Crankshaft Position Sensor Rate of Change – Indicates a problem with the engine’s crankshaft position sensor, which can cause the engine misfires or stall. Check the sensor and wiring, and replace them if necessary.
17. SPN 520192 FMI 2: Hydraulic Oil Temperature Sensor Circuit – Indicates a problem with the hydraulic oil temperature sensor circuit, which can cause issues with the machine’s hydraulic system. Check the wiring and connections, and replace the sensor if necessary.
18. SPN 1569 FMI 31: Engine Protection Torque Derate – Indicates that the engine is operating at a reduced power output due to an issue with the after-treatment system, which can be caused by a blocked DPF or faulty sensors. Check the after-treatment system for any faults, and resolve the issue before continuing to operate the engine.
19. These are just a few examples of the many John Deere fault codes that you may encounter while using a John Deere machine. Always consult the operator’s manual or a certified technician for assistance in resolving any issues or faults.
20. SPN 520229 FMI 7: Hydraulic Pump Control Circuit – This indicates a problem with the hydraulic pump control circuit, which can cause issues with the machine’s hydraulic system. Check the wiring and connections, and replace the pump control valve if necessary.
21. SPN 3216 FMI 3: Aftertreatment Diesel Oxidation Catalyst Intake Gas Temperature – This indicates an issue with the after-treatment diesel oxidation catalyst intake gas temperature, which can be caused by a faulty temperature sensor or wiring issue. Check the sensor and wiring, and replace them if necessary.
22. SPN 177 FMI 3: Engine Exhaust Gas Recirculation Temperature Sensor Circuit – This indicates an issue with the engine’s exhaust gas recirculation temperature sensor circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
23. SPN 164 FMI 11: Injection Pressure – Indicates a problem with the injection pressure, which can be caused by a faulty injection pump or pressure sensor. Check the injection pump and pressure sensor, and replace them if necessary.
24. SPN 523 FMI 19: Secondary Steering Temperature – This indicates an issue with the secondary steering temperature, which can cause the secondary steering system to fail. Check the temperature sensor and wiring, and replace them if necessary.
25. SPN 639 FMI 2: Wheel-Based Vehicle Speed Sensor Circuit – This indicates a problem with the wheel-based vehicle speed sensor circuit, which can cause issues with the machine’s speed control system. Check the sensor and wiring, and replace them if necessary.
26. SPN 970 FMI 31: Engine Speed Signal Abnormal Update Rate – Indicates an issue with the engine speed signal update rate, which can cause engine performance issues. Check the engine speed sensor and wiring, and replace them if necessary.
27. SPN 132 FMI 10: Engine Crankshaft Position Sensor Circuit – This indicates an issue with the engine’s crankshaft position sensor circuit, which can cause the engine to misfire or stall. Check the sensor and wiring, and replace them if necessary.
28. SPN 613 FMI 14: CAN Bus Failure – This indicates a problem with the CAN bus communication system, which can cause issues with multiple machine systems. Check the wiring and connections, and replace any faulty components as necessary.
29. SPN 520201 FMI 4: Hydraulic Fan Control Circuit – This indicates an issue with the hydraulic fan control circuit, which can cause the engine to overheat. Check the wiring and connections, and replace the fan control valve if necessary.
30. SPN 3058 FMI 9: Diesel Particulate Filter System Fault – Indicates an issue with the diesel particulate filter system, which can cause engine performance issues. Check the after-treatment system, and replace any faulty components as necessary.
31. SPN 520234 FMI 5: Motorized Control Valve Circuit – This indicates a problem with the motorized control valve circuit, which can cause issues with the machine’s hydraulic system. Check the wiring and connections, and replace the valve if necessary.
32. SPN 102 FMI 4: Intake Manifold Pressure Sensor Circuit – This indicates an issue with the intake manifold pressure sensor circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
33. SPN 3510 FMI 4: Engine Speed Limit Reached – Indicates that the engine has reached the maximum allowed speed limit. This could be caused by an issue with the engine’s fuel or air supply system. Check these systems and replace any faulty components as necessary.
34. SPN 108 FMI 4: Engine Coolant Temperature Sensor Circuit – This indicates an issue with the engine coolant temperature sensor circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
35. SPN 1347 FMI 7: Exhaust Gas Recirculation Valve Drive Overcurrent – Indicates an issue with the exhaust gas recirculation valve drive overcurrent, which can cause engine performance issues. Check the valve and wiring, and replace them if necessary.
36. SPN 2623 FMI 4: Fuel System Leakage – Indicates a fuel system leak, which can cause engine performance issues or a fire hazard. Check the fuel system and repair any leaks as necessary.
37. SPN 65535 FMI 7: Data Channel (J1939) Communication Failure – Indicates a problem with the J1939 data communication system, which can cause issues with multiple machine systems. Check the wiring and connections, and replace any faulty components as necessary.
38. SPN 971 FMI 31: Engine Throttle Control Signal Abnormal Update Rate – This indicates an issue with the engine throttle control signal update rate, which can cause engine performance issues. Check the throttle control sensor and wiring, and replace them if necessary.
39. SPN 420 FMI 3: Engine Oil Pressure Sensor Circuit – This indicates an issue with the engine oil pressure sensor circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
40. SPN 558 FMI 18: Crankcase Pressure – This indicates an issue with the engine’s crankcase pressure, which can cause engine performance issues. Check the crankcase pressure sensor and wiring, and replace them if necessary.
41. SPN 597 FMI 2: Power Take-Off Speed Signal Erratic – Indicates an issue with the power take-off speed signal, which can cause issues with the machine’s power take-off system. Check the sensor and wiring, and replace them if necessary.
42. SPN 1209 FMI 4: Exhaust Gas Recirculation Temperature Out of Range – Indicates that the engine’s exhaust gas recirculation temperature is out of range. This can be caused by a faulty temperature sensor or wiring issue. Check the sensor and wiring, and replace them if necessary.
43. SPN 1382 FMI 31: Aftertreatment Diesel Particulate Filter System Data Valid but Above Normal Operational Range – Indicates that the after-treatment diesel particulate filter system is operating outside of its normal range. Check the after-treatment system, and replace any faulty components as necessary.
44. SPN 522 FMI 13: Battery Voltage Out of Range – This indicates an issue with the machine’s battery voltage, which can cause issues with multiple machine systems. Check the battery and charging system.
45. Here are 50 more John Deere fault codes and their meanings:
46. SPN 3216 FMI 2: Diesel Exhaust Fluid Quality – This indicates an issue with the quality of the diesel exhaust fluid (DEF), which can cause issues with the machines after the treatment system. Check the DEF quality, and replace it if necessary.
47. SPN 174 FMI 0: Fuel Temperature Sensor Circuit – This indicates an issue with the fuel temperature sensor circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
48. SPN 629 FMI 12: Engine Power Derate Due to Exhaust Over-Temperature – Indicates that the engine’s power output has been reduced due to an issue with the exhaust temperature. Check the after-treatment system, and replace any faulty components as necessary.
49. SPN 1347 FMI 3: Exhaust Gas Recirculation Valve Position Sensor Circuit – Indicates an issue with the exhaust gas recirculation valve position sensor circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
50. SPN 3362 FMI 31: Aftertreatment Diesel Exhaust Fluid System Data Valid but Below Normal Operational Range – Indicates that the after-treatment diesel exhaust fluid system is operating below its normal range. Check the after-treatment system, and replace any faulty components as necessary.
51. SPN 1231 FMI 2: Accelerator Pedal or Lever Position Sensor Circuit – Indicates an issue with the accelerator pedal or lever position sensor circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
52. SPN 165 FMI 18: Engine Oil Temperature – Indicates an issue with the engine oil temperature, which can cause engine performance issues. Check the oil temperature sensor and wiring, and replace them if necessary.
53. SPN 174 FMI 3: Fuel Temperature Voltage High – Indicates a high voltage in the fuel temperature circuit, which can cause engine performance issues. Check the wiring and connections, and replace the fuel temperature sensor if necessary.
54. SPN 524042 FMI 19: Electrical System Voltage Out of Range – Indicates an issue with the machine’s electrical system voltage, which can cause issues with multiple machine systems. Check the wiring and connections, and replace any faulty components as necessary.
55. SPN 970 FMI 31: Engine Crankshaft Position Sensor Abnormal Update Rate – This indicates an issue with the engine’s crankshaft position sensor update rate, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
56. SPN 102 FMI 3: Intake Manifold Pressure Voltage High – Indicates a high voltage in the intake manifold pressure circuit, which can cause engine performance issues. Check the wiring and connections, and replace the intake manifold pressure sensor if necessary.
57. SPN 65535 FMI 10: Data Channel (J1939) Connection Error – Indicates a problem with the J1939 data communication system connection, which can cause issues with multiple machine systems. Check the wiring and connections, and replace any faulty components as necessary.
58. SPN 183 FMI 2: Battery Voltage Low – Indicates that the machine’s battery voltage is low, which can cause issues with multiple machine systems. Check the battery and charging system, and replace any faulty components as necessary.
59. SPN 132 FMI 14: Engine Speed Sensor Circuit – This indicates an issue with the engine speed sensor circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
60. SPN 108 FMI 3: Engine Coolant Temperature Voltage High – Indicates a high voltage in the engine coolant temperature circuit, which can cause engine performance issues. Check the wiring and connections, and replace the engine coolant temperature sensor if necessary.
61. SPN 580 FMI 3: Transmission Oil Temperature Voltage High – Indicates a high voltage in the transmission oil temperature circuit, which can cause transmission performance issues. Check the wiring and connections, and replace the transmission oil temperature sensor if necessary.
62. SPN 91 FMI 2: Accelerator Pedal or Lever Position Sensor Circuit – Indicates an issue with the accelerator pedal or lever position sensor circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
63. SPN 2659 FMI 21: Aftertreatment Diesel Particulate Filter System Data Valid but Above Normal Operational Range – Indicates that the after-treatment diesel particulate filter system is operating above its normal range. Check the after-treatment system, and replace any faulty components as necessary.
64. SPN 524287 FMI 31: Aftertreatment Diesel Exhaust Fluid System Data Erratic, Intermittent or Incorrect – Indicates that the after-treatment diesel exhaust fluid system data is erratic, intermittent, or incorrect. Check the after-treatment system, and replace any faulty components as necessary.
65. SPN 3058 FMI 16: Diesel Particulate Filter Differential Pressure – Indicates an issue with the diesel particulate filter differential pressure, which can cause issues with the after-treatment system. Check the after-treatment system, and replace any faulty components as necessary.
66. SPN 100 FMI 1: Engine Oil Pressure Data Valid but Below Normal Operational Range – Indicates that the engine oil pressure is operating below its normal range. Check the oil level and pressure, and replace any faulty components as necessary.
67. SPN 2659 FMI 18: Aftertreatment Diesel Particulate Filter System Data Valid but Below Normal Operational Range – Indicates that the after-treatment diesel particulate filter system is operating below its normal range. Check the after-treatment system, and replace any faulty components as necessary.
68. SPN 104 FMI 2: Intake Manifold Temperature Sensor Circuit – This indicates an issue with the intake manifold temperature sensor circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
69. SPN 94 FMI 0: Fuel Pressure Data Valid but Below Normal Operational Range – Indicates that the fuel pressure is operating below its normal range. Check the fuel system, and replace any faulty components as necessary.
70. SPN 629 FMI 13: Engine Power Derate Due to Exhaust Under-Temperature – Indicates that the engine’s power output has been reduced due to an issue with the exhaust temperature. Check the after-treatment system, and replace any faulty components as necessary.
71. SPN 3482 FMI 2: Aftertreatment SCR Catalyst Conversion Efficiency – Indicates an issue with the after-treatment SCR catalyst conversion efficiency, which can cause issues with the after-treatment system. Check the after-treatment system, and replace any faulty components as necessary.
72. SPN 132 FMI 13: Engine Speed Sensor Abnormal Update Rate – Indicates an issue with the engine speed sensor update rate, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
73. SPN 1761 FMI 9: Aftertreatment Diesel Exhaust Fluid Tank Temperature Sensor Circuit – This indicates an issue with the after-treatment diesel exhaust fluid tank temperature sensor circuit, which can cause issues with the after-treatment system. Check the sensor and wiring, and replace them if necessary.
74. SPN 677 FMI 2: Turbocharger Compressor Outlet Temperature Voltage Low – Indicates a low voltage in the turbocharger compressor outlet temperature circuit, which can cause engine performance issues. Check the wiring and connections, and replace the turbocharger compressor outlet temperature sensor if necessary.
75. SPN 94 FMI 1: Fuel Pressure Voltage Low – Indicates a low voltage in the fuel pressure circuit, which can cause engine performance issues. Check the wiring and connections, and replace the fuel pressure sensor if necessary.
76. SPN 2003 FMI 31: Fuel Filter Restriction – This indicates that the fuel filter is restricted and needs to be replaced. Check the fuel filter and replace it if necessary.
77. SPN 3510 FMI 4: Aftertreatment SCR Catalyst System Reaction Not Sufficient – Indicates that the after-treatment SCR catalyst system reaction is not sufficient, which can cause issues with the after-treatment system. Check the after-treatment system, and replace any faulty components as necessary.
78. SPN 171 FMI 3: Exhaust Gas Temperature Sensor Circuit Voltage High – Indicates a high voltage in the exhaust gas temperature sensor circuit, which can cause engine performance issues. Check the wiring and connections, and replace the exhaust gas temperature sensor if necessary.
79. SPN 1347 FMI 7: Fuel Pump Speed Data Erratic, Intermittent, or Incorrect – Indicates that the fuel pump speed data is erratic, intermittent, or incorrect. Check the fuel system, and replace any faulty components as necessary.
80. SPN 4364 FMI 1: Diesel Exhaust Fluid (DEF) Pressure Sensor Circuit – This indicates an issue with the diesel exhaust fluid pressure sensor circuit, which can cause issues with the after-treatment system. Check the sensor and wiring, and replace them if necessary.
81. SPN 1761 FMI 2: Aftertreatment Diesel Exhaust Fluid Tank Temperature Voltage High – Indicates a high voltage in the after-treatment diesel exhaust fluid tank temperature circuit, which can cause issues with the after-treatment system. Check the wiring and connections, and replace the sensor if necessary.
82. SPN 1077 FMI 5: Exhaust Gas Recirculation (EGR) Valve Position Circuit – This indicates an issue with the EGR valve position circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
83. SPN 94 FMI 14: Fuel Pressure Data Valid but Above Normal Operational Range – Indicates that the fuel pressure is operating above its normal range. Check the fuel system, and replace any faulty components as necessary.
84. SPN 3226 FMI 12: Engine Exhaust Gas Recirculation 2 Valve Position Circuit – Indicates an issue with the engine exhaust gas recirculation two valve position circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
85. SPN 3055 FMI 0: Diesel Particulate Filter System Intermittent, Engine Stop – Indicates an intermittent issue with the diesel particulate filter system that can cause the engine to stop. Check the after-treatment system, and replace any faulty components as necessary.
86. SPN 4334 FMI 4: Diesel Exhaust Fluid Quality Abnormal Rate of Change – Indicates an abnormal rate of change in the diesel exhaust fluid quality, which can cause issues with the after-treatment system. Check the after-treatment system, and replace any faulty components as necessary.
87. SPN 521 FMI 2: Throttle Control Motor Circuit – This indicates an issue with the throttle control motor circuit, which can cause engine performance issues. Check the motor and wiring, and replace them if necessary.
88. SPN 523 FMI 19: Accelerator Pedal or Lever Position Sensor 2 Circuit – Indicates an issue with the accelerator pedal or lever position sensor 2 circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
89. SPN 1127 FMI 10: Throttle Control Actuator Motor Command Current Above Normal, or Grounded Circuit – Indicates that the throttle control actuator motor command current is above its normal range or that the circuit is grounded. Check the motor and wiring, and replace any faulty components as necessary.
90. SPN 581 FMI 3: Injector Driver Circuit Voltage High – Indicates a high voltage in the injector driver circuit, which can cause engine performance issues. Check the wiring and connections, and replace any faulty components as necessary.
91. SPN 723 FMI 2: Camshaft Position Sensor Signal Noise – Indicates a noisy signal from the camshaft position sensor, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
92. SPN 168 FMI 0: Battery Voltage High – Indicates a high voltage in the battery circuit, which can cause issues with the electrical system. Check the battery and charging system, and replace any faulty components as necessary.
93. SPN 168 FMI 4: Battery Voltage Low – Indicates a low voltage in the battery circuit, which can cause issues with the electrical system. Check the battery and charging system, and replace any faulty components as necessary.
94. SPN 110 FMI 3: Engine Coolant Temperature Circuit Voltage High – Indicates a high voltage in the engine coolant temperature circuit, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
95. SPN 94 FMI 1: Fuel Pressure Voltage Low – Indicates a low voltage in the fuel pressure circuit, which can cause engine performance issues. Check the wiring and connections, and replace the fuel pressure sensor if necessary.
96. SPN 132 FMI 14: Calibration Memory Error – Indicates an error in the calibration memory, which can cause engine performance issues. Check the memory and replace any faulty components as necessary.
97. SPN 1209 FMI 2: Engine Speed Circuit – This indicates an issue with the engine speed circuit, which can cause engine performance issues. Check the wiring and connections, and replace any faulty components as necessary.
98. SPN 3216 FMI 4: Engine Exhaust Gas Recirculation 1 Differential Pressure Circuit Failed Low – Indicates that the engine exhaust gas recirculation one differential pressure circuit is operating below its normal range, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
99. SPN 65535 FMI 31: Special Instruction – Indicates that special instruction is required. Check the manufacturer’s documentation for more information.
100. SPN 5397 FMI 31: Aftertreatment Diesel Exhaust Fluid Tank Heater 1 Circuit – This indicates an issue with the after-treatment diesel exhaust fluid tank heater 1 circuit, which can cause issues with the after-treatment system. Check the heater and wiring, and replace them if necessary.
101. SPN 97 FMI 15: Water in Fuel Indicator – Indicates that water has been detected in the fuel system, which can cause engine performance issues. Check the fuel system and drain any water from the system.
102. SPN 520211 FMI 4: Engine Exhaust Gas Recirculation 1 Temperature Circuit Failed Low – Indicates that the engine exhaust gas recirculation one temperature circuit is operating below its normal range, which can cause engine performance issues. Check the sensor and wiring, and replace them if necessary.
103. SPN 3056 FMI 0: Diesel Particulate Filter System, Data Valid but Above Normal Operational Range – Indicates that the data from the diesel particulate filter system is operating above its normal range. Check the after-treatment system and replace any faulty components as necessary.
104. SPN 132 FMI 10: Calibration Memory Error – Indicates an error in the calibration memory, which can cause engine performance issues. Check the memory and replace any faulty components as necessary.
105. SPN 3510 FMI 5: Aftertreatment SCR Catalyst System Efficiency Below Threshold – Indicates that the after-treatment SCR catalyst system efficiency is below its normal threshold, which can cause issues with the after-treatment system.

John Deere CCU Fault Codes List

The CCU (Cab Control Unit) is an electronic control module in John Deere equipment that controls various cab functions such as lighting, HVAC, and diagnostics. Here is a john Deere fault codes pdf and their meanings:

CCU 523652.31: System Voltage High – Indicates a high voltage in the CCU system, which can cause issues with cab functions. Check the electrical system and replace any faulty components as necessary.

CCU 523653.31: System Voltage Low – Indicates a low voltage in the CCU system, which can cause issues with cab functions. Check the electrical system and replace any faulty components as necessary.

CCU 523655.31: HVAC System Calibration Error – Indicates an error in the HVAC system calibration, which can cause issues with cab temperature control. Check the system calibration and replace any faulty components as necessary.

CCU 523662.31: Cab Pressure Sensor Circuit Failed High – Indicates a high voltage in the cab pressure sensor circuit, which can cause issues with the cab pressure control system. Check the sensor and wiring, and replace if necessary.

CCU 523663.31: Cab Pressure Sensor Circuit Failed Low – Indicates a low voltage in the cab pressure sensor circuit, which can cause issues with the cab pressure control system. Check the sensor and wiring, and replace if necessary.

CCU 523666.31: Cab Temperature Sensor Circuit Failed High – Indicates a high voltage in the cab temperature sensor circuit, which can cause issues with cab temperature control. Check the sensor and wiring, and replace if necessary.

CCU 523667.31: Cab Temperature Sensor Circuit Failed Low – Indicates a low voltage in the cab temperature sensor circuit, which can cause issues with cab temperature control. Check the sensor and wiring, and replace if necessary.

CCU 523676.31: High Beam Control Circuit Failed High – Indicates a high voltage in the high beam control circuit, which can cause issues with the lighting system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523677.31: High Beam Control Circuit Failed Low – Indicates a low voltage in the high beam control circuit, which can cause issues with the lighting system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523693.31: Instrument Cluster Calibration Error – Indicates an error in the instrument cluster calibration, which can cause issues with the display and gauges. Check the calibration and replace any faulty components as necessary.

CCU 523699.31: Fuel Level Sensor Circuit Failed High – Indicates a high voltage in the fuel level sensor circuit, which can cause issues with the fuel level display. Check the sensor and wiring, and replace if necessary.

CCU 523700.31: Fuel Level Sensor Circuit Failed Low – Indicates a low voltage in the fuel level sensor circuit, which can cause issues with the fuel level display. Check the sensor and wiring, and replace if necessary.

CCU 523710.31: HVAC Blower Control Circuit Failed High – Indicates a high voltage in the HVAC blower control circuit, which can cause issues with the HVAC system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523711.31: HVAC Blower Control Circuit Failed Low – Indicates a low voltage in the HVAC blower control circuit, which can cause issues with the HVAC system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523724.31: Front Wiper Control Circuit Failed High – Indicates a high voltage in the front wiper control circuit, which can cause issues with the wiper system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523725.31: Front Wiper Control Circuit Failed Low – Indicates a low voltage in the front wiper control circuit, which can cause issues with the wiper system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523726.31: Rear Wiper Control Circuit Failed High – Indicates a high voltage in the rear wiper control circuit, which can cause issues with the wiper system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523727.31: Rear Wiper Control Circuit Failed Low – Indicates a low voltage in the rear wiper control circuit, which can cause issues with the wiper system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523739.31: Interior Light Control Circuit Failed High – Indicates a high voltage in the interior light control circuit, which can cause issues with the interior lighting system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523740.31: Interior Light Control Circuit Failed Low – Indicates a low voltage in the interior light control circuit, which can cause issues with the interior lighting system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523751.31: Windshield Defrost Control Circuit Failed High – Indicates a high voltage in the windshield defrost control circuit, which can cause issues with the defrost system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523752.31: Windshield Defrost Control Circuit Failed Low – Indicates a low voltage in the windshield defrost control circuit, which can cause issues with the defrost system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523764.31: HVAC Temperature Control Circuit Failed High – Indicates a high voltage in the HVAC temperature control circuit, which can cause issues with the HVAC system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523765.31: HVAC Temperature Control Circuit Failed Low – Indicates a low voltage in the HVAC temperature control circuit, which can cause issues with the HVAC system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523776.31: Cab Fan Control Circuit Failed High – Indicates a high voltage in the cab fan control circuit, which can cause issues with the cab fan system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523777.31: Cab Fan Control Circuit Failed Low – Indicates a low voltage in the cab fan control circuit, which can cause issues with the cab fan system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523789.31: Reverse Alarm Control Circuit Failed High – Indicates a high voltage in the reverse alarm control circuit, which can cause issues with the reverse alarm system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523790.31: Reverse Alarm Control Circuit Failed Low – Indicates a low voltage in the reverse alarm control circuit, which can cause issues with the reverse alarm system. Check the wiring and connections, and replace any faulty components as necessary.

These are just a few of the common CCU fault codes that you may encounter in John Deere equipment. It’s important to refer to the equipment’s manual or contact a certified John Deere technician for specific troubleshooting and repair guidance.

CCU 523802.31: Horn Control Circuit Failed High – Indicates a high voltage in the horn control circuit, which can cause issues with the horn system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523803.31: Horn Control Circuit Failed Low – Indicates a low voltage in the horn control circuit, which can cause issues with the horn system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523815.31: PTO Control Circuit Failed High – Indicates a high voltage in the PTO control circuit, which can cause issues with the PTO system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523816.31: PTO Control Circuit Failed Low – Indicates a low voltage in the PTO control circuit, which can cause issues with the PTO system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523828.31: Cruise Control Circuit Failed High – Indicates a high voltage in the cruise control circuit, which can cause issues with the cruise control system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523829.31: Cruise Control Circuit Failed Low – Indicates a low voltage in the cruise control circuit, which can cause issues with the cruise control system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523841.31: Seat Belt Control Circuit Failed High – Indicates a high voltage in the seat belt control circuit, which can cause issues with the seat belt system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523842.31: Seat Belt Control Circuit Failed Low – Indicates a low voltage in the seat belt control circuit, which can cause issues with the seat belt system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523854.31: Brake Control Circuit Failed High – Indicates a high voltage in the brake control circuit, which can cause issues with the brake system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523855.31: Brake Control Circuit Failed Low – Indicates a low voltage in the brake control circuit, which can cause issues with the brake system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523867.31: Throttle Control Circuit Failed High – Indicates a high voltage in the throttle control circuit, which can cause issues with the throttle system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523868.31: Throttle Control Circuit Failed Low – Indicates a low voltage in the throttle control circuit, which can cause issues with the throttle system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523880.31: Steering Control Circuit Failed High – Indicates a high voltage in the steering control circuit, which can cause issues with the steering system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523881.31: Steering Control Circuit Failed Low – Indicates a low voltage in the steering control circuit, which can cause issues with the steering system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523893.31: Transmission Control Circuit Failed High – Indicates a high voltage in the transmission control circuit, which can cause issues with the transmission system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523894.31: Transmission Control Circuit Failed Low – Indicates a low voltage in the transmission control circuit, which can cause issues with the transmission system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523906.31: Four Wheel Drive Control Circuit Failed High – Indicates a high voltage in the four-wheel drive control circuit, which can cause issues with the four-wheel drive system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523907.31: Four Wheel Drive Control Circuit Failed Low – Indicates a low voltage in the four-wheel drive control circuit, which can cause issues with the four-wheel drive system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523919.31: Engine Oil Pressure Control Circuit Failed High – Indicates a high voltage in the engine oil pressure control circuit, which can cause issues with the engine oil pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523920.31: Engine Oil Pressure Control Circuit Failed Low – Indicates a low voltage in the engine oil pressure control circuit, which can cause issues with the engine oil pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523932.31: Engine Coolant Temperature Control Circuit Failed High – Indicates a high voltage in the engine coolant temperature control circuit, which can cause issues with the engine coolant temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523933.31: Engine Coolant Temperature Control Circuit Failed Low – Indicates a low voltage in the engine coolant temperature control circuit, which can cause issues with the engine coolant temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523945.31: Fuel Level Control Circuit Failed High – Indicates a high voltage in the fuel level control circuit, which can cause issues with the fuel level system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523946.31: Fuel Level Control Circuit Failed Low – Indicates a low voltage in the fuel level control circuit, which can cause issues with the fuel level system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523958.31: Air Conditioning Control Circuit Failed High – Indicates a high voltage in the air conditioning control circuit, which can cause issues with the air conditioning system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523959.31: Air Conditioning Control Circuit Failed Low – Indicates a low voltage in the air conditioning control circuit, which can cause issues with the air conditioning system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523971.31: Transmission Oil Pressure Control Circuit Failed High – Indicates a high voltage in the transmission oil pressure control circuit, which can cause issues with the transmission oil pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523972.31: Transmission Oil Pressure Control Circuit Failed Low – Indicates a low voltage in the transmission oil pressure control circuit, which can cause issues with the transmission oil pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523984.31: Engine Speed Control Circuit Failed High – Indicates a high voltage in the engine speed control circuit, which can cause issues with the engine speed system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523985.31: Engine Speed Control Circuit Failed Low – Indicates a low voltage in the engine speed control circuit, which can cause issues with the engine speed system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523997.31: Engine Oil Temperature Control Circuit Failed High – Indicates a high voltage in the engine oil temperature control circuit, which can cause issues with the engine oil temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 523998.31: Engine Oil Temperature Control Circuit Failed Low – Indicates a low voltage in the engine oil temperature control circuit, which can cause issues with the engine oil temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524010.31: Engine Coolant Level Control Circuit Failed High – Indicates a high voltage in the engine coolant level control circuit, which can cause issues with the engine coolant level system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524011.31: Engine Coolant Level Control Circuit Failed Low – Indicates a low voltage in the engine coolant level control circuit, which can cause issues with the engine coolant level system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524023.31: Engine Air Filter Restriction Control Circuit Failed High – Indicates a high voltage in the engine air filter restriction control circuit, which can cause issues with the engine air filter system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524024.31: Engine Air Filter Restriction Control Circuit Failed Low – Indicates a low voltage in the engine air filter restriction control circuit, which can cause issues with the engine air filter system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524036.31: Transmission Oil Temperature Control Circuit Failed High – Indicates a high voltage in the transmission oil temperature control circuit, which can cause issues with the transmission oil temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524037.31: Transmission Oil Temperature Control Circuit Failed Low – Indicates a low voltage in the transmission oil temperature control circuit, which can cause issues with the transmission oil temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524049.31: Fuel Temperature Control Circuit Failed High – Indicates a high voltage in the fuel temperature control circuit, which can cause issues with the fuel temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524050.31: Fuel Temperature Control Circuit Failed Low – Indicates a low voltage in the fuel temperature control circuit, which can cause issues with the fuel temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524062.31: Hydraulic Oil Temperature Control Circuit Failed High – Indicates a high voltage in the hydraulic oil temperature control circuit, which can cause issues with the hydraulic oil temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524063.31: Hydraulic Oil Temperature Control Circuit Failed Low – Indicates a low voltage in the hydraulic oil temperature control circuit, which can cause issues with the hydraulic oil temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524075.31: Parking Brake Control Circuit Failed High – Indicates a high voltage in the parking brake control circuit, which can cause issues with the parking brake system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524076.31: Parking Brake Control Circuit Failed Low – Indicates a low voltage in the parking brake control circuit, which can cause issues with the parking brake system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524088.31: Engine Turbocharger Control Circuit Failed High – Indicates a high voltage in the engine turbocharger control circuit, which can cause issues with the engine turbocharger system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524089.31: Engine Turbocharger Control Circuit Failed Low -Indicates a low voltage in the engine turbocharger control circuit, which can cause issues with the engine turbocharger system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524101.31: Engine Exhaust Gas Recirculation Control Circuit Failed High – Indicates a high voltage in the engine exhaust gas recirculation control circuit, which can cause issues with the engine exhaust gas recirculation system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524102.31: Engine Exhaust Gas Recirculation Control Circuit Failed Low – Indicates a low voltage in the engine exhaust gas recirculation control circuit, which can cause issues with the engine exhaust gas recirculation system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524114.31: Engine Air Intake Control Circuit Failed High – Indicates a high voltage in the engine air intake control circuit, which can cause issues with the engine air intake system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524115.31: Engine Air Intake Control Circuit Failed Low – Indicates a low voltage in the engine air intake control circuit, which can cause issues with the engine air intake system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524127.31: Engine Oil Pressure Control Circuit Failed High – Indicates a high voltage in the engine oil pressure control circuit, which can cause issues with the engine oil pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524128.31: Engine Oil Pressure Control Circuit Failed Low – Indicates a low voltage in the engine oil pressure control circuit, which can cause issues with the engine oil pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524140.31: Engine Coolant Temperature Control Circuit Failed High – Indicates a high voltage in the engine coolant temperature control circuit, which can cause issues with the engine coolant temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524141.31: Engine Coolant Temperature Control Circuit Failed Low – Indicates a low voltage in the engine coolant temperature control circuit, which can cause issues with the engine coolant temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524153.31: Engine Speed Control Circuit Failed High – Indicates a high voltage in the engine speed control circuit, which can cause issues with the engine speed system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524154.31: Engine Speed Control Circuit Failed Low – Indicates a low voltage in the engine speed control circuit, which can cause issues with the engine speed system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524166.31: Engine Starter Control Circuit Failed High – Indicates a high voltage in the engine starter control circuit, which can cause issues with the engine starter system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524167.31: Engine Starter Control Circuit Failed Low – Indicates a low voltage in the engine starter control circuit, which can cause issues with the engine starter system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524179.31: Engine Fuel Pressure Control Circuit Failed High – Indicates a high voltage in the engine fuel pressure control circuit, which can cause issues with the engine fuel pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524180.31: Engine Fuel Pressure Control Circuit Failed Low – Indicates a low voltage in the engine fuel pressure control circuit, which can cause issues with the engine fuel pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524192.31: Engine Throttle Control Circuit Failed High – Indicates a high voltage in the engine throttle control circuit, which can cause issues with the engine throttle system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524193.31: Engine Throttle Control Circuit Failed Low – Indicates a low voltage in the engine throttle control circuit, which can cause issues with the engine throttle system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524205.31: Engine Control Module (ECM) RAM Failure – Indicates a problem with the engine control module’s (ECM) random access memory (RAM) function. This can cause issues with the ECM’s ability to communicate with other systems. Check the ECM and replace as necessary.

CCU 524206.31: Engine Control Module (ECM) ROM Failure – Indicates a problem with the engine control module’s (ECM) read-only memory (ROM) function. This can cause issues with the ECM’s ability to communicate with other systems. Check the ECM and replace as necessary.

CCU 524217.31: Engine Accelerator Pedal Position Sensor Supply Voltage Failed High – Indicates a high voltage in the engine accelerator pedal position sensor supply voltage circuit, which can cause issues with the accelerator pedal position sensor. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524218.31: Engine Accelerator Pedal Position Sensor Supply Voltage Failed Low – Indicates a low voltage in the engine accelerator pedal position sensor supply voltage circuit, which can cause issues with the accelerator pedal position sensor. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524230.31: Engine Turbocharger Speed Control Circuit Failed High – Indicates a high voltage in the engine turbocharger speed control circuit, which can cause issues with the engine turbocharger system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524231.31: Engine Turbocharger Speed Control Circuit Failed Low – Indicates a low voltage in the engine turbocharger speed control circuit, which can cause issues with the engine turbocharger system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524243.31: Engine Coolant Level Control Circuit Failed High – Indicates a high voltage in the engine coolant level control circuit, which can cause issues with the engine coolant level system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524244.31: Engine Coolant Level Control Circuit Failed Low – Indicates a low voltage in the engine coolant level control circuit, which can cause issues with the engine coolant level system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524256.31: Engine Oil Temperature Control Circuit Failed High – Indicates a high voltage in the engine oil temperature control circuit, which can cause issues with the engine oil temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524257.31: Engine Oil Temperature Control Circuit Failed Low – Indicates a low voltage in the engine oil temperature control circuit, which can cause issues with the engine oil temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524269.31: Engine Protection Shutdown – Indicates that the engine has shut down due to an issue with the engine protection system. Check the engine protection system and repair as necessary.

CCU 524280.31: Engine Fuel Temperature Control Circuit Failed High – Indicates a high voltage in the engine fuel temperature control circuit, which can cause issues with the engine.

CCU 524281.31: Engine Fuel Temperature Control Circuit Failed Low – Indicates a low voltage in the engine fuel temperature control circuit, which can cause issues with the engine fuel temperature system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524293.31: Engine Exhaust Gas Recirculation (EGR) Temperature Control Circuit Failed High – Indicates a high voltage in the engine exhaust gas recirculation (EGR) temperature control circuit, which can cause issues with the EGR system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524294.31: Engine Exhaust Gas Recirculation (EGR) Temperature Control Circuit Failed Low – Indicates a low voltage in the engine exhaust gas recirculation (EGR) temperature control circuit, which can cause issues with the EGR system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524306.31: Engine Exhaust Gas Recirculation (EGR) Control Circuit Failed High – Indicates a high voltage in the engine exhaust gas recirculation (EGR) control circuit, which can cause issues with the EGR system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524307.31: Engine Exhaust Gas Recirculation (EGR) Control Circuit Failed Low – Indicates a low voltage in the engine exhaust gas recirculation (EGR) control circuit, which can cause issues with the EGR system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524319.31: Engine Boost Pressure Control Circuit Failed High – Indicates a high voltage in the engine boost pressure control circuit, which can cause issues with the engine boost pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524320.31: Engine Boost Pressure Control Circuit Failed Low – Indicates a low voltage in the engine boost pressure control circuit, which can cause issues with the engine boost pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524332.31: Engine Fuel Delivery Pressure Control Circuit Failed High – Indicates a high voltage in the engine fuel delivery pressure control circuit, which can cause issues with the engine fuel delivery system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524333.31: Engine Fuel Delivery Pressure Control Circuit Failed Low – Indicates a low voltage in the engine fuel delivery pressure control circuit, which can cause issues with the engine fuel delivery system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524345.31: Engine Intake Manifold Pressure Control Circuit Failed High – Indicates a high voltage in the engine intake manifold pressure control circuit, which can cause issues with the engine intake manifold pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524346.31: Engine Intake Manifold Pressure Control Circuit Failed Low – Indicates a low voltage in the engine intake manifold pressure control circuit, which can cause issues with the engine intake manifold pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524358.31: Engine Exhaust Pressure Control Circuit Failed High – Indicates a high voltage in the engine exhaust pressure control circuit, which can cause issues with the engine exhaust pressure system. Check the wiring and connections, and replace any faulty components as necessary.

CCU 524359.31: Engine Exhaust Pressure Control Circuit Failed Low – Indicates a low voltage in the engine exhaust pressure control circuit, which can cause issues with the engine exhaust pressure system.

SPN 97 FMI 3: Water in Fuel Indicator Circuit – Indicates a problem with the water-in-fuel indicator circuit. Check the circuitry and replace any faulty sensors or connections.

SPN 108 FMI 2: Engine Coolant Temperature Sensor Data Erratic – Indicates a problem with the engine coolant temperature sensor, such as a short or open circuit. Check the wiring and replace the sensor if necessary.

SPN 110 FMI 3: Engine Coolant Temperature Voltage High – Indicates a high voltage in the engine coolant temperature circuit. Check the wiring and connections and replace the sensor if necessary.

SPN 111 FMI 3: Engine Coolant Temperature Voltage Low – Indicates a low voltage in the engine coolant temperature circuit. Check the wiring and connections and replace the sensor if necessary.

SPN 168 FMI 4: Battery Voltage Low – Indicates that the battery voltage is too low. Check the battery connections and charging system.

SPN 171 FMI 3: Ambient Air Temperature Voltage High – Indicates a high voltage in the ambient air temperature circuit. Check the wiring and connections and replace the sensor if necessary.

SPN 172 FMI 3: Ambient Air Temperature Voltage Low – Indicates a low voltage in the ambient air temperature circuit. Check the wiring and connections and replace the sensor if necessary.

SPN 174 FMI 3: Fuel Temperature Voltage High – Indicates a high voltage in the fuel temperature circuit. Check the wiring and connections and replace the sensor if necessary.

SPN 175 FMI 3: Fuel Temperature Voltage Low – Indicates a low voltage in the fuel temperature circuit. Check the wiring and connections and replace the sensor if necessary.

SPN 190 FMI 2: Engine Overspeed – Indicates that the engine is operating at an excessively high speed. Check the engine speed sensor and wiring.

SPN 520192 FMI 2: CAN Bus Off Error – Indicates a problem with the CAN bus communication system. Check the wiring and connections and replace any faulty components.

SPN 523 FMI 19: Engine Fan Speed – Indicates an issue with the engine fan speed. Check the fan and wiring, and replace any faulty components.

SPN 524 FMI 4: Engine Fan Speed High – Indicates that the engine fan speed is too high. Check the fan and wiring, and replace any faulty components.

SPN 535 FMI 16: J1939 ECU Power Supply – Indicates a problem with the J1939 ECU power supply. Check the wiring and connections and replace any faulty components.

SPN 656 FMI 2: Turbocharger Boost Pressure Low – Indicates that the turbocharger is not producing enough boost pressure. Check the turbocharger and related components.

SPN 662 FMI 2: Turbocharger Boost Pressure Voltage Low – Indicates a low voltage in the turbocharger boost pressure circuit. Check the wiring and connections and replace any faulty components.

SPN 691 FMI 2: Engine Speed Sensor Error – Indicates a problem with the engine speed sensor, such as a short or open circuit. Check the wiring and replace the sensor if necessary.

SPN 726 FMI 7: Engine Oil Pressure Voltage High – Indicates a high voltage in the engine oil pressure circuit. Check the wiring and connections and replace the sensor if necessary.

SPN 731 FMI 2: Engine Overspeed Warning – Indicates that the engine is operating at a dangerously high speed. Check the engine speed sensor and wiring.

SPN 1059 FMI 18: J1939 Network #2 – Indicates a problem with the J1939 network #2. Check the wiring and connections and replace any faulty components.

Tips to Troubleshoot John Deere Fault Codes

While the John Deere Fault Codes List provides an overview of the different fault codes that your John Deere equipment can display, it does not provide a comprehensive guide on how to troubleshoot these errors. Here are some tips to help you diagnose and solve common issues:

• Check the diagnostic tool:If you are using a diagnostic tool to read the fault codes, ensure that the tool is functioning correctly. Check the user manual to see if the tool is compatible with your John Deere equipment and if there are any special instructions to follow.
• Check for loose connections:Fault codes can be triggered by loose or corroded connections, so inspect all wiring and connections for any signs of damage or wear. Make sure all connections are secure and free of corrosion or debris.
• Inspect the sensor or component:The fault code may indicate a malfunctioning sensor or component. Use the equipment’s service manual to locate the affected sensor or component and check it for any physical damage, wear, or electrical issues.
• Look for physical damage:In some cases, the fault code may be caused by physical damage to the equipment. Inspect the equipment for any signs of damage, such as dents, scratches, or broken parts.
• Check the software:Fault codes can also be triggered by issues with the equipment’s software. Ensure that the software is up to date and functioning correctly. If necessary, contact your local John Deere dealer for support.
• Contact John Deere support:If you have tried all of the above steps and are still experiencing issues, contact John Deere support for assistance. They have a team of trained technicians who can help you diagnose and fix the problem.

How to Clear John Deere Fault Codes?

Clearing John Deere fault codes is a simple process that you can do on your own with the right equipment. Here are the steps to follow:

Turn off the engine:

Before clearing the fault codes, turn off the engine to prevent any damage to the equipment or the diagnostic tool.

Connect the diagnostic tool:

Connect the diagnostic tool to the equipment and follow the manufacturer’s instructions for accessing the fault codes and clearing them.

Clear the codes:

Once you have accessed the fault codes, select the option to clear them. This will reset the equipment’s system and remove any stored fault codes.

Turn on the engine:

After clearing the fault codes, turn on the engine and check if the issue has been resolved. If the issue persists, you may need to contact John Deere support for further assistance.

Conclusion

John Deere’s equipment is built to last, but like any machinery, it can experience issues from time to time. Understanding thefault codesthat your equipment can display is essential for diagnosing and fixing problems quickly, avoiding costly downtime and repairs. We hope that this article has provided you with a comprehensive John Deere fault codes listand some tips on how to troubleshoot and clear them. By following these steps, you can keep yourJohn Deere equipment running smoothly and efficientlyfor years to come.

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