Case IH fault codes & repair guides
All 9,847 codes· 50 per page · page 76 of 197
| Code | Controller | Issue summary | Repair manual |
|---|---|---|---|
| 3980 | Engine ECU | ISM-IDI Engine ECU Memory Failure | Full repair manual for code 3980, Engine ECU |
| 3981 | Engine Control Module (ECM) | After run relay low side driver circuit open or short to ground failure | Full repair manual for code 3981, Engine Control Module (ECM) |
| 3981 | Engine ECU | DOC-In temperature under 220 deg C during regeneration | Full repair manual for code 3981, Engine ECU |
| 3983 | Engine Control Unit (ECU) | Engine overspeed detected | Full repair manual for code 3983, Engine Control Unit (ECU) |
| 3984 | Engine Control Unit (ECU) / Dosing Control Unit (DCU) | SCR dosing, time to closed loop too long | Full repair manual for code 3984, Engine Control Unit (ECU) / Dosing Control Unit (DCU) |
| 3985 | Engine Control Unit (ECU) | Signal Range Check (SRC) High for the Turbine Upstream Pressure Sensor | Full repair manual for code 3985, Engine Control Unit (ECU) |
| 3985 | Engine ECU | ISM-IDI Engine ECU Temperature Too High | Full repair manual for code 3985, Engine ECU |
| 3985 | Engine ECU (ISM-IDI Engine ECU) | Exhaust gas pressure sensor voltage is higher than expected | Full repair manual for code 3985, Engine ECU (ISM-IDI Engine ECU) |
| 3986 | ENGINE | ISM-IDI Fuel Solenoid Short Circuit | Full repair manual for code 3986, ENGINE |
| 3986 | Engine Control Unit (ECU) | Exhaust gas pressure sensor voltage is lower than expected. | Full repair manual for code 3986, Engine Control Unit (ECU) |
| 3986 | Engine Control Unit (ECU) | Turbine Upstream Pressure Sensor: SRC Low | Full repair manual for code 3986, Engine Control Unit (ECU) |
| 3987 | Engine Control Unit (ECU) | Turbine downstream pressure sensor voltage is higher than expected | Full repair manual for code 3987, Engine Control Unit (ECU) |
| 3987 | Engine ECU (ISM-IDI ENGINE) | Fuel Solenoid Position Sensor Low Voltage | Full repair manual for code 3987, Engine ECU (ISM-IDI ENGINE) |
| 3988 | Engine Control Unit (ECU) | Turbine downstream pressure sensor voltage is lower than expected | Full repair manual for code 3988, Engine Control Unit (ECU) |
| 3988 | Engine Control Unit (ECU) | ISM-IDI Fuel Solenoid Position Sensor High Voltage | Full repair manual for code 3988, Engine Control Unit (ECU) |
| 3989 | Engine ECU | Aftertreatment Burner Injector 1 Short Circuit | Full repair manual for code 3989, Engine ECU |
| 3990 | Engine ECU | ISM-IDI Aftertreatment Burner Injector 2 Short Circuit | Full repair manual for code 3990, Engine ECU |
| 3991 | Engine ECU | ISM-IDI Engine ECU Relay Output Power Short Circuit | Full repair manual for code 3991, Engine ECU |
| 3992 | Engine Control Unit (ECU) | ISM-IDI Diesel Particulate Filter Soot Level Full | Full repair manual for code 3992, Engine Control Unit (ECU) |
| 3993 | Engine Control Module (ECM) / Engine Controller | DPF Intake Temperature Higher Than 800 deg C | Full repair manual for code 3993, Engine Control Module (ECM) / Engine Controller |
| 3994 | Engine ECU (ISM-IDI ENGINE controller) | Diesel Oxidation Catalyst (DOC) IN Temperature is over 800 °C (1472 °F) | Full repair manual for code 3994, Engine ECU (ISM-IDI ENGINE controller) |
| 3995 | ISM-IDI ENGINE | Diesel Particulate Filter (DPF) OUT (Exhaust) Temperature is over 800 °C (1472 °F) | Full repair manual for code 3995, ISM-IDI ENGINE |
| 3997-00 - BCM | BCM | Electrical Accessory Power Relay | Full repair manual for code 3997-00 - BCM, BCM |
| 3997-03 - BCM | BCM | Electrical accessory power relay - short circuit to B+ | Full repair manual for code 3997-03 - BCM, BCM |
| 3997-05 - BCM | BCM | Electrical accessory power relay - open circuit | Full repair manual for code 3997-05 - BCM, BCM |
| 3997-06 - BCM | BCM | Electrical Accessory Power Relay - Current Above Normal or Grounded Circuit | Full repair manual for code 3997-06 - BCM, BCM |
| 3999 | Engine Control Module (ECM) / Engine Control Unit (ECU) | ECM engine fault not converted in CNH module | Full repair manual for code 3999, Engine Control Module (ECM) / Engine Control Unit (ECU) |
| 4001 | DV Module | Signal of Aux-stick (AUX1) - out of range low (DV module only) | Full repair manual for code 4001, DV Module |
| 4002 | DV Module / ARU | Signal of Aux-stick (AUX1) - out of range high (DV module only) | Full repair manual for code 4002, DV Module / ARU |
| 4003 | DV Module (Directional Valve module) | Signal from Remote Flow Potentiometer 1 (AUX 1) - out of range | Full repair manual for code 4003, DV Module (Directional Valve module) |
| 4004 | Armrest Control Module (ACM) | ACM (GARU) Offline | Full repair manual for code 4004, Armrest Control Module (ACM) |
| 4005 | DV Module | Signal of Aux-stick (AUX2) - out of range low | Full repair manual for code 4005, DV Module |
| 4005 | EHR (Electronic Hitch/Hydraulic Remote) Control Unit / Armrest Controller (ARM/ATC) | Levers are not calibrated at power up. | Full repair manual for code 4005, EHR (Electronic Hitch/Hydraulic Remote) Control Unit / Armrest Controller (ARM/ATC) |
| 4006 | DV Module | Signal of Aux-stick (AUX2) - out of range high (DV module only) | Full repair manual for code 4006, DV Module |
| 4007 | DV Module / Armrest Controller (ARU / ARM) | Signal from Remote Flow potentiometer 2 (AUX 2) out of range | Full repair manual for code 4007, DV Module / Armrest Controller (ARU / ARM) |
| 4008 | DV Module (Draft/Valve Module) | Signal from Remote valve 2 Timer Pot 1 - out of range | Full repair manual for code 4008, DV Module (Draft/Valve Module) |
| 4009 | DV Module or ARU | Signal of Aux-stick (AUX3) - out of range low (DV module only) | Full repair manual for code 4009, DV Module or ARU |
| 4010 | DV Module | Signal of Aux-stick (AUX3) - out of range high (DV module only) | Full repair manual for code 4010, DV Module |
| 4011 | DV Module / ARU | Signal from Remote Flow potentiometer 3 (AUX 3) out of range (DV module only) | Full repair manual for code 4011, DV Module / ARU |
| 4011-03 - BCM | BCM | Headlamp high beam left - short circuit to B+ | Full repair manual for code 4011-03 - BCM, BCM |
| 4011-05 - BCM | BCM | Left High Beam Open Circuit | Full repair manual for code 4011-05 - BCM, BCM |
| 4011-06 - BCM | BCM | Headlamp high beam left - short circuit to ground | Full repair manual for code 4011-06 - BCM, BCM |
| 4012-00 - BCM | BCM | Headlamp high beam right - too many loads or faulty load | Full repair manual for code 4012-00 - BCM, BCM |
| 4012-03 - BCM | BCM | BCM right high beam short circuit | Full repair manual for code 4012-03 - BCM, BCM |
| 4012-05 - BCM | Body Controller (BCM) | Headlamp 2 High Beam (Right High Beam) Current below normal or open circuit | Full repair manual for code 4012-05 - BCM, Body Controller (BCM) |
| 4012-06 - BCM | BCM | Short circuit to ground on the right high beam headlamp circuit | Full repair manual for code 4012-06 - BCM, BCM |
| 4015 | DV Module | Signal from Remote Flow Potentiometer 4 (AUX 4) - out of range (DV module only) | Full repair manual for code 4015, DV Module |
| 4016 | DV Module | Signal from Remote valve Timer Pot 1 - out of range (DV module only) | Full repair manual for code 4016, DV Module |
| 4019 | Hitch Controller | Invalid Configuration - Right Draft Pin voltage is outside the normal operating range | Full repair manual for code 4019, Hitch Controller |
| 4026-00 - BCM | BCM | Right mirror heater - circuit overload - too many loads or faulty load | Full repair manual for code 4026-00 - BCM, BCM |
