John Deere fault codes & repair guides
All 3,995 codes· 50 per page · page 20 of 80
| Code | Controller | Issue summary | Repair manual |
|---|---|---|---|
| 656.18 | Engine Control Unit (ECU) | Injector Number 6 Not Responding or Fuel Injector #6 Flow Very Low | Full repair manual for code 656.18, Engine Control Unit (ECU) |
| 676 | — | Cold Start Aid Relay Output Signal Fault | Full repair manual for code 676 |
| 676.............. | — | Check Relay and Wiring | Full repair manual for code 676.............. |
| 676.............. | — | Glow Plug Signal Received When Not Expected | Full repair manual for code 676.............. |
| 000676.03 | — | Cold Start Relay Signal When Relay Should Be Off | Full repair manual for code 000676.03 |
| 000676.03 | — | Cold Start Relay Is Supplying Voltage When It Should Be Turned Off | Full repair manual for code 000676.03 |
| 000676.03 | — | Glow Plug Relay Output Problem | Full repair manual for code 000676.03 |
| 676.03 | ECU | Glow Plug Relay Voltage High | Full repair manual for code 676.03, ECU |
| 000676.05 | — | Cold Start Has High Resistance (ECU) | Full repair manual for code 000676.05 |
| 000676.05 | — | Cold Start Relay Is Not Supplying Voltage When It Should Be Turned On | Full repair manual for code 000676.05 |
| 000676.05 | — | No Cold Start Relay Signal When Relay Should Be On | Full repair manual for code 000676.05 |
| 676.05 | ECU | Cold Start Aid Circuit Has High Resistance / Glow Plug Relay Voltage is Too Low | Full repair manual for code 676.05, ECU |
| ECU000676.05 | ECU | Glow Relay Output Problem | Full repair manual for code ECU000676.05, ECU |
| 676.05 | ECU (Engine Control Unit) | Cold Start Aid Circuit Has High Resistance / Glow Plug Relay Out of Range Low / Glow Plug Relay Voltage Too Low | Full repair manual for code 676.05, ECU (Engine Control Unit) |
| 000676.06 | — | Cold Start Has Low Resistance (ECU) | Full repair manual for code 000676.06 |
| 676.06 | Engine Control Unit (ECU) | Glow Plug Relay Output Out of Range High | Full repair manual for code 676.06, Engine Control Unit (ECU) |
| 000676.14 | — | Cold Start Relay Not Operated | Full repair manual for code 000676.14 |
| 676.14 | Engine Control Unit (ECU) | Cold Start Aid / Glow Plug Relay Circuit Fault | Full repair manual for code 676.14, Engine Control Unit (ECU) |
| 000676.31 | — | Cold Start Circuit Has Voltage When It Should Be Switched Off | Full repair manual for code 000676.31 |
| 676.31 | Engine Control Unit (ECU) | Cold Start Aid Relay Signal Not Received When Expected / Glow Plug Relay Output High When Relay Not Active | Full repair manual for code 676.31, Engine Control Unit (ECU) |
| 000677.04 | — | Starter Relay Short to Ground | Full repair manual for code 000677.04 |
| 000704.09 | — | Internal Issue With Module | Full repair manual for code 000704.09 |
| 704.09 | Steering System Control Unit | Control Software Internal Fault | Full repair manual for code 704.09, Steering System Control Unit |
| 708.1 | XMC | Steering Wheel Position Sensor Channel 1, Fault | Full repair manual for code 708.1, XMC |
| 000708.10 | — | Cab Steering Wheel Sensor Signal 1 Issue | Full repair manual for code 000708.10 |
| 000708.16 | — | Cab Steering Wheel Sensor Signal 1 Issue | Full repair manual for code 000708.16 |
| 708.16 | XMC, XMA, or TMA | Steering System Control Unit Fault | Full repair manual for code 708.16, XMC, XMA, or TMA |
| 000708.18 | — | Cab Steering Wheel Sensor Signal 1 Issue | Full repair manual for code 000708.18 |
| 708.18 | Steering System Control Unit | Frequency on Channel 1 of Steering Input Device (SID) Too Low | Full repair manual for code 708.18, Steering System Control Unit |
| 708.2 | XMC (Steering System Control Unit) | Steering Wheel Position Sensor Channel 1, Fault | Full repair manual for code 708.2, XMC (Steering System Control Unit) |
| 000708.20 | — | Cab Steering Wheel Sensor Signal 1 Issue | Full repair manual for code 000708.20 |
| 000708.21 | — | Cab Steering Wheel Sensor Signal 1 Issue | Full repair manual for code 000708.21 |
| 708.21 | Steering System Control Unit (SSU) | Steering Wheel Position Sensor Channel 1, Fault | Full repair manual for code 708.21, Steering System Control Unit (SSU) |
| 709.1 | XMC / XSC / XMA / TMA / PSC | Steering Wheel Position Sensor Channel 2, Fault | Full repair manual for code 709.1, XMC / XSC / XMA / TMA / PSC |
| 000709.10 | — | Cab Steering Wheel Sensor Signal 2 Issue | Full repair manual for code 000709.10 |
| 000709.16 | — | Cab Steering Wheel Sensor Signal 2 Issue | Full repair manual for code 000709.16 |
| 709.16 | XMC (Steering System Control Unit) | Frequency on Channel 2 of Steering Input Device (SID) Too High | Full repair manual for code 709.16, XMC (Steering System Control Unit) |
| 000709.18 | — | Cab Steering Wheel Sensor Signal 2 Issue | Full repair manual for code 000709.18 |
| 709.18 | XMC | Steering Wheel Position Sensor, Frequency at Channel 2 Too Low | Full repair manual for code 709.18, XMC |
| 709.2 | Steering System Control Unit (XMC, XMA, XSC, TMA, PSC) | Steering System Control Unit Fault - Steering Wheel Position Sensor Channel 2 Fault | Full repair manual for code 709.2, Steering System Control Unit (XMC, XMA, XSC, TMA, PSC) |
| 000709.20 | — | Cab Steering Wheel Sensor Signal 2 Issue | Full repair manual for code 000709.20 |
| 000709.21 | — | Cab Steering Wheel Sensor Signal 2 Issue | Full repair manual for code 000709.21 |
| 709.21 | Steering System Control Unit (XMC, XSC, XMA, TMA, PSC) | Steering Wheel Position Sensor Channel 2, Fault | Full repair manual for code 709.21, Steering System Control Unit (XMC, XSC, XMA, TMA, PSC) |
| 729 | — | Inlet Air Heater Signal Fault | Full repair manual for code 729 |
| 729.............. | — | Inlet Air Heater Signal High | Full repair manual for code 729.............. |
| 000734.05 | — | Main Control Module Has Noted An Issue With The Supply Voltage To The Low Forward Clutch Solenoid | Full repair manual for code 000734.05 |
| 000734.05 | — | Direct Drive Forward Clutch Solenoid Low Amps | Full repair manual for code 000734.05 |
| 734.05 | PTD / PTQ | Proportional Solenoid Valve for Forward Clutch, Current Too Low | Full repair manual for code 734.05, PTD / PTQ |
| 734.05 | PTQ, PTP, PTI, or PTR | Proportional Solenoid Valve for Forward Clutch, Current Too Low | Full repair manual for code 734.05, PTQ, PTP, PTI, or PTR |
| 734.05 | PTR, EPC, PTP, PTI, PTQ | Low Forward Clutch Proportional Solenoid Valve Current Too Low | Full repair manual for code 734.05, PTR, EPC, PTP, PTI, PTQ |
