John Deere fault codes & repair guides
All 3,995 codes· 50 per page · page 23 of 80
| Code | Controller | Issue summary | Repair manual |
|---|---|---|---|
| 970.31 | Engine Control Unit (ECU) / Engine Interface Control Unit (EIC) | Immobilizer System: Key authentication or control unit authentication failed / Auxiliary Engine Shutdown Switch Active | Full repair manual for code 970.31, Engine Control Unit (ECU) / Engine Interface Control Unit (EIC) |
| 971 | — | External Derate Switch Fault | Full repair manual for code 971 |
| 971.............. | — | Non-Engine Fault Detected - Check Other Shutdown Devices | Full repair manual for code 971.............. |
| 971.............. | — | External Fuel Derate Switch Active | Full repair manual for code 971.............. |
| 974 | — | Remote Throttle Signal Fault | Full repair manual for code 974 |
| 000974.02 | — | Communication Issue Between Hand Throttle Module and Cab Module (TIA) | Full repair manual for code 000974.02 |
| 974.02 | ACU (Armrest Control Unit) or UIC (User Interface Control) | Hand Throttle Sensor Circuit Voltage Conflict | Full repair manual for code 974.02, ACU (Armrest Control Unit) or UIC (User Interface Control) |
| 000974.03 | — | Issue With Throttle Position Sensor Signal Voltage Out Of Range | Full repair manual for code 000974.03 |
| 000974.03 | — | Communication Issue Between Hand Throttle Module and Cab Module (TIA) | Full repair manual for code 000974.03 |
| 974.03 | ACU, EPC, ECM / ECU, UIC | Hand Throttle Potentiometer Voltage Too High | Full repair manual for code 974.03, ACU, EPC, ECM / ECU, UIC |
| 974.03 | ACU, EPC, UIC, or ECU / ECM | Hand Throttle Sensor Circuit Voltage Problem | Full repair manual for code 974.03, ACU, EPC, UIC, or ECU / ECM |
| 000974.04 | — | Issue With Throttle Position Sensor Signal Voltage Out Of Range | Full repair manual for code 000974.04 |
| 000974.04 | — | Communication Issue Between Hand Throttle Module and Cab Module (TIA) | Full repair manual for code 000974.04 |
| 974.04 | ACU / EPC / ECM / UIC | Low Voltage Detected in Hand Throttle Sensor Circuit | Full repair manual for code 974.04, ACU / EPC / ECM / UIC |
| 974.04 | ACU, EPC, UIC, or ECU / ECM | Hand Throttle Potentiometer, Voltage Too Low | Full repair manual for code 974.04, ACU, EPC, UIC, or ECU / ECM |
| 1058.03 | CCU or XMC / XSC / XSA | Pressure Switch for Air Brake System, Voltage Too High | Full repair manual for code 1058.03, CCU or XMC / XSC / XSA |
| 001058.04 | — | Low Voltage On Air Brake Pressure Switch Main Control Module | Full repair manual for code 001058.04 |
| 1058.04 | CCU, XSC, XSA, or XMC | Trailer brake pressure sensor circuit fault / Air Trailer Pre-Brake Pressure Sensor Voltage Low | Full repair manual for code 1058.04, CCU, XSC, XSA, or XMC |
| 001058.16 | — | Air Brake Pressure Too High Or Failed Sensor Rear Chassis | Full repair manual for code 001058.16 |
| 1058.16 | CCU | INFORMATION FOR OPERATOR: Pressure Switch for Air-Brake System Is Not Activated (Pressure Too High) | Full repair manual for code 1058.16, CCU |
| 001058.18 | — | Air Brake Pressure Too Low Or Failed Sensor Rear Chassis (CCU) | Full repair manual for code 001058.18 |
| 1058.18 | BCU | Information for Operator: Pressure Switch for Air-Brake System Is Not Activated (Pressure Too Low) | Full repair manual for code 1058.18, BCU |
| 1075.............. | — | Low Pressure Fuel Pump Status Error | Full repair manual for code 1075.............. |
| 1075.............. | — | Low Pressure Fuel Pump Circuit Has High Resistance | Full repair manual for code 1075.............. |
| 1075.............. | — | Check Pump and Wiring | Full repair manual for code 1075.............. |
| 1075.02 | Engine Control Unit (ECU) | Low Pressure Fuel Pump Data Erratic | Full repair manual for code 1075.02, Engine Control Unit (ECU) |
| 1075.04 | Engine Control Unit (ECU) | Low Pressure Fuel Pump Supply Voltage Low | Full repair manual for code 1075.04, Engine Control Unit (ECU) |
| 1075.05 | Engine Control Unit (ECU) | Low Pressure Fuel Pump Circuit Has High Resistance | Full repair manual for code 1075.05, Engine Control Unit (ECU) |
| 001075.06 | — | Issue With The Electric Low Pressure Fuel Pump Low Resistance | Full repair manual for code 001075.06 |
| 1075.06 | ECU | Low Pressure Fuel Pump Circuit Has Low Resistance | Full repair manual for code 1075.06, ECU |
| 001075.09 | — | Electric Low Pressure Fuel Pump Communication Issue | Full repair manual for code 001075.09 |
| 1075.09 | Engine Control Unit (ECU) | Low-Pressure Fuel Pump Loss of Communication / CAN Bus Message Cannot Be Received, Information from Fuel Pump | Full repair manual for code 1075.09, Engine Control Unit (ECU) |
| 1075.12 | Engine Control Unit (ECU) | Issue With The Electric Low Pressure Fuel Pump | Full repair manual for code 1075.12, Engine Control Unit (ECU) |
| 1075.15 | Engine Control Unit (ECU) | Low-Pressure Fuel Pump Temperature Slightly High / Fuel Pump Temperature Too High | Full repair manual for code 1075.15, Engine Control Unit (ECU) |
| 1076 | — | Fuel Inj Pump Control Valve Fault | Full repair manual for code 1076 |
| 1076.............. | — | Injection Pump Detected Defect | Full repair manual for code 1076.............. |
| 1077 | — | Fuel Inj Pump Control Valve Fault | Full repair manual for code 1077 |
| 1077.............. | — | Pump Detected Communication Error | Full repair manual for code 1077.............. |
| 1077.............. | — | Pump Supply Voltage Out of Range | Full repair manual for code 1077.............. |
| 1077.............. | — | Pump Self Test Error | Full repair manual for code 1077.............. |
| 1077.............. | — | Pump Initiated Engine Protection | Full repair manual for code 1077.............. |
| 1078 | — | Fuel Injection Pump Speed/Position Sensor Fault | Full repair manual for code 1078 |
| 1078.............. | — | ECU/Pump Timing Extremely Mismatched | Full repair manual for code 1078.............. |
| 1079 | — | Height Sensor Power Voltage Too High | Full repair manual for code 1079 |
| 1079 | — | Sensor Supply 1 Voltage Fault | Full repair manual for code 1079 |
| 1079 | — | Concave Position Sensor Supply Voltage High | Full repair manual for code 1079 |
| 1079.............. | — | Sensor Supply 1 Voltage High | Full repair manual for code 1079.............. |
| 1079.............. | — | Check Wiring | Full repair manual for code 1079.............. |
| ACU001079.02 | ACU | ACU Power Sensor 1 Voltage Problem | Full repair manual for code ACU001079.02, ACU |
| 001079.03 | — | Suspension System Fault | Full repair manual for code 001079.03 |
