JCB fault codes & repair guides
All 586 codes· 50 per page · page 2 of 12
| Code | Controller | Issue summary | Repair manual |
|---|---|---|---|
| C030A | — | Short Circuit Fault Condition for the Quick Hitch Boom Warning Lamp | Full repair manual for code C030A |
| C030B | — | Open Circuit Fault for Quick Hitch Boom Warning Lamp | Full repair manual for code C030B |
| C030C | — | Short Circuit Fault Condition for Merge Flow A Solenoid | Full repair manual for code C030C |
| C030D | — | Open Circuit Fault for Merge Flow A Solenoid | Full repair manual for code C030D |
| C030E | — | Short Circuit Fault Condition for the Merge Flow B Solenoid | Full repair manual for code C030E |
| C030F | — | Open Circuit Fault Condition for the Merge Flow B Solenoid | Full repair manual for code C030F |
| C0311 | — | Open Circuit Fault for Low Flow ARV Proportional Solenoid | Full repair manual for code C0311 |
| C0313 | — | Open Circuit Fault Condition for the High Flow ARV Proportional Solenoid | Full repair manual for code C0313 |
| C0314 | — | Short Circuit Fault Condition for the Auxiliary Mode Changeover Solenoid | Full repair manual for code C0314 |
| C0315 | — | Open Circuit Fault for Auxiliary Mode Changeover Solenoid | Full repair manual for code C0315 |
| C0316 | — | Short Circuit Fault Condition for ISO Controls Changeover Output | Full repair manual for code C0316 |
| C0317 | — | Open Circuit Fault Condition for ISO Controls Changeover Output | Full repair manual for code C0317 |
| C0318 | — | Short Circuit Fault Condition for the Arm Limiter Solenoid Output | Full repair manual for code C0318 |
| C0319 | — | Open Circuit Fault for Arm Limiter Solenoid Output | Full repair manual for code C0319 |
| C031A | — | HECU Unable to Achieve Target Current/Pressure for Low Flow A Solenoid | Full repair manual for code C031A |
| C031B | — | Low Flow B Solenoid Not Reaching Target Current/Pressure | Full repair manual for code C031B |
| C031C | — | High Flow A Solenoid Not Reaching Target Current/Pressure | Full repair manual for code C031C |
| C031D | — | High Flow B Solenoid Not Reaching Target Current/Pressure | Full repair manual for code C031D |
| C031E | — | Low Flow Pressure Transducer Output is Out of Range Low | Full repair manual for code C031E |
| C031F | — | Low Flow Pressure Transducer Output is Out of Range High | Full repair manual for code C031F |
| C0320 | — | High Flow Pressure Transducer Output Is Below Range | Full repair manual for code C0320 |
| C0321 | — | High Flow Pressure Transducer Output is Out of Range High | Full repair manual for code C0321 |
| C0322 | — | Low Flow Pilot Pressure Transducer Output is Out of Range Low | Full repair manual for code C0322 |
| C0323 | — | Low Flow Pilot Pressure Transducer Output is Out of Range High | Full repair manual for code C0323 |
| C0324 | — | High Flow Pilot Pressure Transducer Output is Out of Range Low | Full repair manual for code C0324 |
| C0325 | — | High Flow Pilot Pressure Transducer Output is Out of Range High | Full repair manual for code C0325 |
| C0326 | — | Short Circuit Fault Condition for the Hammer Speed Regulator Solenoid | Full repair manual for code C0326 |
| C0327 | — | Open Circuit Fault Condition for Hammer Speed Regulator Solenoid | Full repair manual for code C0327 |
| C101D | — | Fuel Level Low Alarm | Full repair manual for code C101D |
| C101E | — | Fuel Level Empty Alarm | Full repair manual for code C101E |
| C101F | — | Fuel Level Sensor Short Circuit | Full repair manual for code C101F |
| C1020 | — | Fuel Level Sensor Open Circuit | Full repair manual for code C1020 |
| C1021 | — | Engine Coolant Level Low | Full repair manual for code C1021 |
| C1023 | — | Hydraulic Oil Temperature High Alarm | Full repair manual for code C1023 |
| C1024 | — | Hydraulic Oil Temperature Sensor Open Circuit | Full repair manual for code C1024 |
| C1025 | — | Battery Voltage High Fault Condition | Full repair manual for code C1025 |
| C1026 | — | Battery Voltage Low Fault Condition | Full repair manual for code C1026 |
| C1027 | — | Alternator Voltage High Fault Condition | Full repair manual for code C1027 |
| C1028 | — | Alternator Voltage Low Fault Condition | Full repair manual for code C1028 |
| C1029 | — | Ambient Air Temperature Sensor Short Circuit | Full repair manual for code C1029 |
| C102A | — | Ambient Air Temperature Sensor Open Circuit | Full repair manual for code C102A |
| C102B | — | Cooling Fan Solenoid Fault Condition | Full repair manual for code C102B |
| C102C | — | Cooling Fan Solenoid Short Circuit | Full repair manual for code C102C |
| C102D | — | Cooling Fan Solenoid Open Circuit | Full repair manual for code C102D |
| C1032 | — | Hydraulic Oil Temperature Critical Alarm | Full repair manual for code C1032 |
| C1035 | — | Hydraulic Oil Temperature Sensor Short Circuit | Full repair manual for code C1035 |
| C1300 | — | Short Circuit in 2 Stage MRV Solenoid Circuit | Full repair manual for code C1300 |
| C1301 | — | OPEN CIRCUIT [C052-SOLENOID: 2 STAGE MRV] | Full repair manual for code C1301 |
| C1303 | — | Short Circuit in Travel Speed Solenoid Circuit | Full repair manual for code C1303 |
| C1304 | — | Open Circuit in Travel Speed Solenoid | Full repair manual for code C1304 |
