Case IH fault codes & repair guides
All 9,847 codes· 50 per page · page 62 of 197
| Code | Controller | Issue summary | Repair manual |
|---|---|---|---|
| 3509-03 - DEC | Engine ECU (Engine Control Unit) | 5 Volt Sensor Supply Instance 1 Electrical Circuit Fault Voltage Above Normal | Full repair manual for code 3509-03 - DEC, Engine ECU (Engine Control Unit) |
| 3509-03 - ITBV | ITBV (Intelligent Trailer Brake Valve) Controller | Trailer brake control line pressure sensor voltage high | Full repair manual for code 3509-03 - ITBV, ITBV (Intelligent Trailer Brake Valve) Controller |
| 3509-04 - DEC | Engine Control Module (ECM / ECU) | Sensor Supply Voltage 1 : Voltage Below Normal | Full repair manual for code 3509-04 - DEC, Engine Control Module (ECM / ECU) |
| 3509-04 - VCM | Engine Control Module (ECM / ECU) or Vehicle Control Module (VCM) | 5V Sensor Supply #1 Voltage Low | Full repair manual for code 3509-04 - VCM, Engine Control Module (ECM / ECU) or Vehicle Control Module (VCM) |
| 3509-04 - ITBV | ITBV | Sensor Supply Voltage #1 out of range low / Trailer brake control line pressure sensor voltage low | Full repair manual for code 3509-04 - ITBV, ITBV |
| 3509-05 - BCM | BCM (Body Control Module) | Sensor regulated power (5V) - open circuit | Full repair manual for code 3509-05 - BCM, BCM (Body Control Module) |
| 3509-06 - BCM | BCM | Sensor regulated power (5V) - short circuit to ground | Full repair manual for code 3509-06 - BCM, BCM |
| 3510 | Engine Control Module (ECM) or Dosing Control Unit (DCU) / Aftertreatment Control Module | SRC low on duty cycle | Full repair manual for code 3510, Engine Control Module (ECM) or Dosing Control Unit (DCU) / Aftertreatment Control Module |
| 3510-03 - DEC | Engine ECU (Engine Control Unit / EDC) | 5 volt sensor supply instance 2 electrical circuit fault - voltage above normal | Full repair manual for code 3510-03 - DEC, Engine ECU (Engine Control Unit / EDC) |
| 3510-03 - VCM | VCM | 5V sensor supply #2 voltage high | Full repair manual for code 3510-03 - VCM, VCM |
| 3510-04 - DEC | Engine Control Unit (ECU) | 5 volt sensor supply instance 2 electrical circuit fault voltage below normal | Full repair manual for code 3510-04 - DEC, Engine Control Unit (ECU) |
| 3510-04 - VCM | VCM | 5V sensor supply #2 voltage low | Full repair manual for code 3510-04 - VCM, VCM |
| 3511 | Engine Control Unit (ECU) / Dosing Control Unit (DCU) | Sensor Supply 3 Circuit - Voltage Below Normal / Shorted to Low Source | Full repair manual for code 3511, Engine Control Unit (ECU) / Dosing Control Unit (DCU) |
| 3511-03 - VCM | Engine Control Unit (ECU) / Vehicle Control Module (VCM) | Sensor supply voltage #3 out of range high | Full repair manual for code 3511-03 - VCM, Engine Control Unit (ECU) / Vehicle Control Module (VCM) |
| 3511-04 - VCM | VCM | 5V sensor supply #3 voltage low | Full repair manual for code 3511-04 - VCM, VCM |
| 3512 | Engine Control Unit (ECU) / Vehicle Control Module (VCM) / Dosing Control Unit (DCU) | DCU State Monitoring - DCU not ready in time | Full repair manual for code 3512, Engine Control Unit (ECU) / Vehicle Control Module (VCM) / Dosing Control Unit (DCU) |
| 3512-03 - VCM | VCM | 8V sensor supply voltage high | Full repair manual for code 3512-03 - VCM, VCM |
| 3512-04 - VCM | VCM | 8V sensor supply voltage low | Full repair manual for code 3512-04 - VCM, VCM |
| 3513 | Engine Control Unit (ECU / ENG) | SCR Catalyst not present _Relation of temperature behavior between both Catalyst Temperatures not plausible | Full repair manual for code 3513, Engine Control Unit (ECU / ENG) |
| 3513-04 - DEC | Engine Control Unit (ECU / ECM) | Sensor Supply 5 Circuit - Voltage Below Normal or Shorted to Low Source | Full repair manual for code 3513-04 - DEC, Engine Control Unit (ECU / ECM) |
| 3514-04 - DEC | Engine Control Module (ECM) or Vehicle Control Module (VCM) | 12 volt sensor supply instance 2 electrical circuit fault voltage below normal | Full repair manual for code 3514-04 - DEC, Engine Control Module (ECM) or Vehicle Control Module (VCM) |
| 3515 | Engine Control Unit (ECU), Dosing Control Unit (DCU), or Vehicle Control Module (VCM) | SCR Catalyst missing | Full repair manual for code 3515, Engine Control Unit (ECU), Dosing Control Unit (DCU), or Vehicle Control Module (VCM) |
| 3517 (DTC 19C4) - ECU | Engine Control Unit (ECU) | Ambient Air Temperature Sensor failure (of Humidity Sensor) - Signal too high | Full repair manual for code 3517 (DTC 19C4) - ECU, Engine Control Unit (ECU) |
| 3517 | Engine Control Unit (ECU) / A-9000 | Ambient Air Temperature Sensor failure (of Humidity Sensor) - Signal too high | Full repair manual for code 3517, Engine Control Unit (ECU) / A-9000 |
| 3517 (F-171-03) | Engine Control Unit (ECU) / Electronic Diesel Control (EDC) | Ambient Air Temperature Sensor failure (of Humidity Sensor) - Signal too high. | Full repair manual for code 3517 (F-171-03), Engine Control Unit (ECU) / Electronic Diesel Control (EDC) |
| 3518 (DTC 2AC4) - ECU | Engine Control Unit (ECU) | Ambient temperature sensor voltage is lower than expected | Full repair manual for code 3518 (DTC 2AC4) - ECU, Engine Control Unit (ECU) |
| 3518 (F-171-04) | Engine Control Unit (ECU) | Ambient Air Temperature Sensor failure (of Humidity Sensor) - Signal too low | Full repair manual for code 3518 (F-171-04), Engine Control Unit (ECU) |
| 3518 | Engine Control Unit (ECU / EDC) | Ambient Air Temperature Sensor failure (of Humidity Sensor if installed) - Signal too low. | Full repair manual for code 3518, Engine Control Unit (ECU / EDC) |
| 3518 | Engine ECU (Engine Control Module) | Ambient Air Temperature Sensor failure (of Humidity Sensor if installed) - Signal too low | Full repair manual for code 3518, Engine ECU (Engine Control Module) |
| 3519 | Engine Control Module (ECM) | Ambient Air Temperature Sensor failure (of Humidity Sensor) - CAN Signal failure | Full repair manual for code 3519, Engine Control Module (ECM) |
| 3521 | Engine Control Unit (ECU) / Engine Control Module (ECM) | NOx Estimation failure - Estimated Nox signal not reliable | Full repair manual for code 3521, Engine Control Unit (ECU) / Engine Control Module (ECM) |
| 3525 (DTC E18E) - ECU | Engine Control Unit (ECU) | Downstream NOx sensor internal failure (Open Circuit Error) | Full repair manual for code 3525 (DTC E18E) - ECU, Engine Control Unit (ECU) |
| 3525 | Engine Control Unit (EDC) or Vehicle Control Module (VCM) | Downstream NOx sensor internal failure (Open Circuit Error) | Full repair manual for code 3525, Engine Control Unit (EDC) or Vehicle Control Module (VCM) |
| 3526 (F-3234-06) | ECM / EDC or VCM / DCU | Downstream NOx sensor internal failure (Short Circuit Error) | Full repair manual for code 3526 (F-3234-06), ECM / EDC or VCM / DCU |
| 3526 (DTC E28E) - ECU | Engine Control Unit (ECU) / Electronic Diesel Control (EDC) | Downstream NOx sensor internal failure (Short Circuit Error) | Full repair manual for code 3526 (DTC E28E) - ECU, Engine Control Unit (ECU) / Electronic Diesel Control (EDC) |
| 3526 | Engine Control Unit (ECU) / Engine Management System (EMS) or VCM (Vehicle Control Module) | Downstream NOx sensor internal failure (Short Circuit Error) | Full repair manual for code 3526, Engine Control Unit (ECU) / Engine Management System (EMS) or VCM (Vehicle Control Module) |
| 3528 | Engine Control Module (ECM) or Denoxtronic / SCR Control Unit (DCU) | Downstream NOx sensor values are not plausible. | Full repair manual for code 3528, Engine Control Module (ECM) or Denoxtronic / SCR Control Unit (DCU) |
| 3528 (DTC 319E) - ECU | Engine Control Unit (ECU) / EDC (Electronic Diesel Control) | Downstream NOx sensor values are not plausible | Full repair manual for code 3528 (DTC 319E) - ECU, Engine Control Unit (ECU) / EDC (Electronic Diesel Control) |
| 3528 (F-519045-02) | Engine ECU (Engine Control Module) | Downstream NOx sensor values are not plausible | Full repair manual for code 3528 (F-519045-02), Engine ECU (Engine Control Module) |
| 3529 (F-3232-05) | Engine Control Unit (ECU) | Downstream NOx sensor internal failure (Heater Open Circuit Error) | Full repair manual for code 3529 (F-3232-05), Engine Control Unit (ECU) |
| 3529 | Engine Control Unit (ECU) / Engine Management System (EMS) or Aftertreatment Control Module (ACM / DCU) | Downstream NOx sensor internal failure (Heater Open Circuit Error) | Full repair manual for code 3529, Engine Control Unit (ECU) / Engine Management System (EMS) or Aftertreatment Control Module (ACM / DCU) |
| 3529 (DTC E16E) - ECU | Engine Control Unit (ECU) or Dosing Control Unit (DCU) | Downstream NOx sensor internal failure (Heater Open Circuit Error) | Full repair manual for code 3529 (DTC E16E) - ECU, Engine Control Unit (ECU) or Dosing Control Unit (DCU) |
| 3530 | Engine Control Module (ECM) / Engine Management System (EMS) | Downstream NOx sensor internal failure (Heater Short Circuit Error) | Full repair manual for code 3530, Engine Control Module (ECM) / Engine Management System (EMS) |
| 3530 (DTC E26E) - ECU | Engine Control Unit (ECU) / Engine Management System (EMS) | Downstream NOx sensor internal failure (Heater Short Circuit Error) | Full repair manual for code 3530 (DTC E26E) - ECU, Engine Control Unit (ECU) / Engine Management System (EMS) |
| 3530 (F-3232-06) | Engine ECU | Downstream NOx sensor internal failure (Heater Short Circuit Error) | Full repair manual for code 3530 (F-3232-06), Engine ECU |
| 3531 (F-3232-12) | Engine Control Unit (ECU) | Downstream NOx sensor internal failure (Heater Performance Plausibility Error) | Full repair manual for code 3531 (F-3232-12), Engine Control Unit (ECU) |
| 3531 | Engine Management System (EMS) / Engine Control Module (ECM) or Dosing Control Unit (DCU) | Downstream NOx sensor internal failure (Heater Performance Plausibility Error) | Full repair manual for code 3531, Engine Management System (EMS) / Engine Control Module (ECM) or Dosing Control Unit (DCU) |
| 3532 | Engine Control Unit (ECU) | NOx Sensor Failure - Sensor not ready in time | Full repair manual for code 3532, Engine Control Unit (ECU) |
| 3533 | Engine Controller (Engine ECU) | CAN Message timeout Nox (from Nox Sensor) - CAN timeout | Full repair manual for code 3533, Engine Controller (Engine ECU) |
| 3533 (DTC 9D6E) - ECU | Engine Control Module (ECM) or Aftertreatment Control Module (ACM) | CAN timeout error from downstream NOx sensor | Full repair manual for code 3533 (DTC 9D6E) - ECU, Engine Control Module (ECM) or Aftertreatment Control Module (ACM) |
