John Deere fault codes & repair guides
All 3,995 codes· 50 per page · page 56 of 80
| Code | Controller | Issue summary | Repair manual |
|---|---|---|---|
| 521168.02 | CSM (Cab Switch Module) | Airflow Mode On/Off Button Fault | Full repair manual for code 521168.02, CSM (Cab Switch Module) |
| 521168.08 | CSM | Cab Fan Air Direction Button Issue / Airflow Distribution Button Fault | Full repair manual for code 521168.08, CSM |
| 521169.08 | CSM (Cab Switch Module) | Temperature Control Button (-) Fault | Full repair manual for code 521169.08, CSM (Cab Switch Module) |
| 521192.11 | ECU | Immobilizer System: Key authentication or control unit authentication failed | Full repair manual for code 521192.11, ECU |
| 521192.12 | EIC (Electronic Instrument Cluster) / ICA (Instrument Cluster Armrest) | Immobilizer Control Device Fault / VIN Information, Mismatch | Full repair manual for code 521192.12, EIC (Electronic Instrument Cluster) / ICA (Instrument Cluster Armrest) |
| 521192.13 | EIC / ECU | Immobilizer Control Device Fault / Key authentication failed | Full repair manual for code 521192.13, EIC / ECU |
| 521192.14 | ECU or EIC | Immobilizer Control Device Fault | Full repair manual for code 521192.14, ECU or EIC |
| 521192.31 | ECU or EIC | Immobilizer Control Device Fault | Full repair manual for code 521192.31, ECU or EIC |
| ECU521214.09 | ECU | Key Authentication or Control Unit Authentication Failed | Full repair manual for code ECU521214.09, ECU |
| 521214.09 | Engine Control Unit (ECU) | Immobilizer Control Device Fault | Full repair manual for code 521214.09, Engine Control Unit (ECU) |
| 521214.11 | EIC (Engine Interface Control Unit) | Immobilizer Control Device Fault / Key authentication failed | Full repair manual for code 521214.11, EIC (Engine Interface Control Unit) |
| 521214.14 | ECU | VIN Information Mismatch / Immobilizer Control Device Fault | Full repair manual for code 521214.14, ECU |
| 521214.31 | EIC | Immobilizer Control Device Fault / EIC Control Software Fault | Full repair manual for code 521214.31, EIC |
| 521233.05 | PTR (Power Train Reverser) or PTP (Propulsion and Steering Control Unit / Powertrain) | High Valve Driver Fault | Full repair manual for code 521233.05, PTR (Power Train Reverser) or PTP (Propulsion and Steering Control Unit / Powertrain) |
| 521234.05 | PTR (Power Train Reverser) or PTP (Powertrain PowrQuad / PowrShift) | Low Valve Driver Fault | Full repair manual for code 521234.05, PTR (Power Train Reverser) or PTP (Powertrain PowrQuad / PowrShift) |
| 521235.05 | PTR / PTP | Reverse Valve Driver Fault / Reverse Proportional Solenoid Circuit Fault | Full repair manual for code 521235.05, PTR / PTP |
| 521237.03 | PTD | Forward Clutch Oil Pressure Too High | Full repair manual for code 521237.03, PTD |
| 521237.04 | PTD | Forward Clutch Oil Pressure Too Low | Full repair manual for code 521237.04, PTD |
| 521239.03 | PTD (Powertrain Transmission Drive) / TCU (Transmission Control Unit) | Reverse Brake Oil Pressure Too High / Reverse Clutch Pressure Sensor, Signal Voltage too High | Full repair manual for code 521239.03, PTD (Powertrain Transmission Drive) / TCU (Transmission Control Unit) |
| 521239.04 | PTD (Powertrain Module D / Powertrain Transmission Direct Drive) or TCU (Transmission Control Unit) | Reverse Clutch Pressure Sensor, Signal Voltage too Low or Reverse Brake Oil Pressure Too Low | Full repair manual for code 521239.04, PTD (Powertrain Module D / Powertrain Transmission Direct Drive) or TCU (Transmission Control Unit) |
| 521274.09 | AIC (Armrest Interface Control Unit) | LIN Bus 1 Fault | Full repair manual for code 521274.09, AIC (Armrest Interface Control Unit) |
| 521274.09 | Armrest Interface Control Unit (AIC) or Sealed Switch Module (SSM) | LIN Bus 1 Fault / Communication System Message Missing | Full repair manual for code 521274.09, Armrest Interface Control Unit (AIC) or Sealed Switch Module (SSM) |
| 521275.09 | AIC (Armrest Interface Control Unit) | LIN Bus 2 Fault | Full repair manual for code 521275.09, AIC (Armrest Interface Control Unit) |
| 521276.09 | AIC | LIN Bus 3 Fault | Full repair manual for code 521276.09, AIC |
| 521277.09 | AIC (Armrest Interface Control Unit) | LIN Bus 4 Fault (Incorrect LIN Bus 4 Message) | Full repair manual for code 521277.09, AIC (Armrest Interface Control Unit) |
| 521321.09 | EIC | Immobilizer Message Missing | Full repair manual for code 521321.09, EIC |
| 521321.12 | EIC (Engine Interface Control Unit) | Immobilizer Control Device Fault / Key authentication failed | Full repair manual for code 521321.12, EIC (Engine Interface Control Unit) |
| 521322.07 | EIC | Immobilizer Control Device Fault | Full repair manual for code 521322.07, EIC |
| 521322.31 | EIC (Engine Interface Control Unit) | Immobilizer System - Key Authentication Failed | Full repair manual for code 521322.31, EIC (Engine Interface Control Unit) |
| 521393.06 | RLC | Wiper Park Feedback Current High | Full repair manual for code 521393.06, RLC |
| 521401.02 | AIC (Armrest Interface Control Unit) | Front Hitch Control Lever Switch/Sensor Conflict | Full repair manual for code 521401.02, AIC (Armrest Interface Control Unit) |
| 521401.19 | SCO (Secondary Control Option) | Front Hitch Control Lever Fault Message Received | Full repair manual for code 521401.19, SCO (Secondary Control Option) |
| 521401.31 | Secondary Control Option (SCO) | Front Hitch Control Lever Command Missing | Full repair manual for code 521401.31, Secondary Control Option (SCO) |
| 521404.02 | AIC | SCV XI Control Lever Switch/Sensor Conflict | Full repair manual for code 521404.02, AIC |
| 521404.19 | SCO | Incorrect CAN Bus Message, Information from AIC Control Software | Full repair manual for code 521404.19, SCO |
| 521404.31 | Front Chassis Module (SCO) | Problem With Switch Position Signal From SCV Switch Depending | Full repair manual for code 521404.31, Front Chassis Module (SCO) |
| 521405.02 | AIC (Armrest Interface Control Unit) | SCV XII Control Lever Switch/Sensor Conflict | Full repair manual for code 521405.02, AIC (Armrest Interface Control Unit) |
| 521405.19 | SCO | Problem With Switch Position Signal From SCV Switch Depending | Full repair manual for code 521405.19, SCO |
| 521405.31 | Front Chassis Module (SCO) | Problem With Switch Position Signal From SCV Switch Depending | Full repair manual for code 521405.31, Front Chassis Module (SCO) |
| 521406.02 | AIC (Armrest Interface Control Unit) | SCV XIII Control Lever Switch/Sensor Conflict | Full repair manual for code 521406.02, AIC (Armrest Interface Control Unit) |
| 521406.19 | Front Chassis Module (SCO) | Problem With Switch Position Signal From SCV Switch Depending | Full repair manual for code 521406.19, Front Chassis Module (SCO) |
| 521406.31 | SCO | Problem With Switch Position Signal From SCV Switch Depending | Full repair manual for code 521406.31, SCO |
| 521407.02 | AIC (Armrest Interface Control Unit) | SCV XIV Control Lever Switch/Sensor Conflict | Full repair manual for code 521407.02, AIC (Armrest Interface Control Unit) |
| 521407.19 | SCO | SCV XIV Control Lever Fault Message Received | Full repair manual for code 521407.19, SCO |
| 521407.31 | SCO | SCV XIV Control Lever Command Missing | Full repair manual for code 521407.31, SCO |
| 521408.02 | AIC (Armrest Interface Control Unit) | Armrest Hitch Controls Module Switch Conflict | Full repair manual for code 521408.02, AIC (Armrest Interface Control Unit) |
| 521408.02 | AIC / HCC | Rear Hitch Return to Lower Set Point Switch Conflict | Full repair manual for code 521408.02, AIC / HCC |
| 521408.09 | HCC | Rear Hitch Return to Lower Switch Message Missing | Full repair manual for code 521408.09, HCC |
| 521408.09 | HCC (Hitch Control Computer / Hitch Control Controller) | Rear Hitch Return to Lower Switch Message Missing | Full repair manual for code 521408.09, HCC (Hitch Control Computer / Hitch Control Controller) |
| 521409.02 | AIC | Armrest Multi-Function Lever Module Circuit Fault | Full repair manual for code 521409.02, AIC |
