Case IH fault codes & repair guides
All 9,847 codes· 50 per page · page 197 of 197
| Code | Controller | Issue summary | Repair manual |
|---|---|---|---|
| U55 | Central Control Unit (CCU) | PTO started too early | Full repair manual for code U55, Central Control Unit (CCU) |
| U55 | Transmission Control Module (TCM) or Central Control Unit (CCM/UCM) | PTO started or PTO engaged when calibrating | Full repair manual for code U55, Transmission Control Module (TCM) or Central Control Unit (CCM/UCM) |
| U55 | Transmission / EDC (Electronic Draft Control) Controller | PTO Engaged When Calibrating | Full repair manual for code U55, Transmission / EDC (Electronic Draft Control) Controller |
| U56 | Transmission Control Unit (TCU) / Power Control Unit (PCU) | Engine Torque/RPM Sensor Open Circuit | Full repair manual for code U56, Transmission Control Unit (TCU) / Power Control Unit (PCU) |
| U57 | Transmission ECU | Engine Torque/RPM Sensor Short To Ground | Full repair manual for code U57, Transmission ECU |
| U58 | Transmission Control Module (TCU) or PTO Controller | PTO twist sensor open circuit | Full repair manual for code U58, Transmission Control Module (TCU) or PTO Controller |
| U59 | Powertrain Control Unit (PCU), Transmission Controller, or dedicated PTO Controller | PTO Sensor Short Circuit to Ground | Full repair manual for code U59, Powertrain Control Unit (PCU), Transmission Controller, or dedicated PTO Controller |
| U60 | Transmission Controller / EDC (Electronic Draft Control) module | Out Of Range Calibration Value | Full repair manual for code U60, Transmission Controller / EDC (Electronic Draft Control) module |
| U60 | Transmission Control Module (Transmission Controller / CFPS) | Lever No.1 is not in Neutral | Full repair manual for code U60, Transmission Control Module (Transmission Controller / CFPS) |
| U61 | Electronic Management System / Electronic Modules | Lever No. 1 not in neutral | Full repair manual for code U61, Electronic Management System / Electronic Modules |
| U62 | Electronic Management System / Electronic Modules (Hitch Controller or Transmission Controller) | Lever No. 2 not in neutral | Full repair manual for code U62, Electronic Management System / Electronic Modules (Hitch Controller or Transmission Controller) |
| U63 | Armrest Controller (ARM) or Electronic Management System / EHR | Lever No. 3 not in neutral | Full repair manual for code U63, Armrest Controller (ARM) or Electronic Management System / EHR |
| U64 | Cab Control Module (CCM) / Armrest Controller / Electronic Management System | Lever No. 4 not in neutral | Full repair manual for code U64, Cab Control Module (CCM) / Armrest Controller / Electronic Management System |
| U68 | Transmission Controller | Creeper not engaged. | Full repair manual for code U68, Transmission Controller |
| U69 | Transmission Control Module (TCM) | Creeper stuck. | Full repair manual for code U69, Transmission Control Module (TCM) |
| U70 | Electronic System / Transmission Controller | PTO twist sensor not calibrated | Full repair manual for code U70, Electronic System / Transmission Controller |
| U71 | TCU | Calibration Attempted With Enable Switch OFF | Full repair manual for code U71, TCU |
| U72 | Transmission / Steering Controller | Proximity sensor input is out of range - open | Full repair manual for code U72, Transmission / Steering Controller |
| U73 | Transmission Control Module (TCM) or Electronic Power Steering / Fast Steer module | Proximity sensor input is out of range - closed | Full repair manual for code U73, Transmission Control Module (TCM) or Electronic Power Steering / Fast Steer module |
| U74 | Fast Steer Controller (KA module) or EPL / Transmission Control Module | LVDT Calibration Unsuccessful | Full repair manual for code U74, Fast Steer Controller (KA module) or EPL / Transmission Control Module |
| U75 | Central Control Unit (CCU) or Transmission Control Unit (TCU) | Quick fill calibration value too high | Full repair manual for code U75, Central Control Unit (CCU) or Transmission Control Unit (TCU) |
| U76 | Transmission Controller / Central Control Unit (CCU) | Quick fill calibration value too low | Full repair manual for code U76, Transmission Controller / Central Control Unit (CCU) |
| U77 | Transmission Control Module / Electronic Draft Control (EDC) | Damper calibration value too high | Full repair manual for code U77, Transmission Control Module / Electronic Draft Control (EDC) |
| U78 | Transmission Control Module (TCM) / Driveline System | Damper calibration value too low | Full repair manual for code U78, Transmission Control Module (TCM) / Driveline System |
| U79 | Transmission Control Module (TCU) or DEC (Driveline/Electronic Control) controller | PTO twist sensor is not plausible | Full repair manual for code U79, Transmission Control Module (TCU) or DEC (Driveline/Electronic Control) controller |
| U81 | Transmission Controller / Central Controller | No Medium/Reverse Range Synchronizer Movement Sensed | Full repair manual for code U81, Transmission Controller / Central Controller |
| U81 | Transmission Control Module (Transmission ECU) | No signal from flywheel torque sensor | Full repair manual for code U81, Transmission Control Module (Transmission ECU) |
| U82 | Transmission Control Module (TCM) | No 12VD – No power for C3 and C4 solenoids | Full repair manual for code U82, Transmission Control Module (TCM) |
| U82 | Transmission Control Module (TCM) or GCM2 | No Low/High Range Synchronizer Movement Sensed | Full repair manual for code U82, Transmission Control Module (TCM) or GCM2 |
| U83 | Transmission Control Module (TCM) or GCM2 | Synchronizer Potentiometer Connectors Swapped | Full repair manual for code U83, Transmission Control Module (TCM) or GCM2 |
| U84 | Transmission Control Module (TCM) | Reverse and high range synchroniser solenoid connectors swapped. | Full repair manual for code U84, Transmission Control Module (TCM) |
| U85 | Transmission Control Module (TCM) | Medium and low range synchronizer solenoid connectors swapped | Full repair manual for code U85, Transmission Control Module (TCM) |
| U86 | Transmission Control Module (TCM) or GCM2 | Medium/Reverse Range Synchronizer Neutral Error | Full repair manual for code U86, Transmission Control Module (TCM) or GCM2 |
| U87 | Transmission Control Module (TCM) | Low/High Range Synchronizer Neutral Error | Full repair manual for code U87, Transmission Control Module (TCM) |
| U88 | Transmission Control Module (TCM) | Medium/Reverse Range Synchronizer Calibration Values Out Of Tolerance | Full repair manual for code U88, Transmission Control Module (TCM) |
| U89 | Transmission Control Module (TCM) / GCM2 | Low/high range synchronizer calibration values out of tolerance. | Full repair manual for code U89, Transmission Control Module (TCM) / GCM2 |
| U90 | MTA CCM or APH | Wrong PTO twist installed | Full repair manual for code U90, MTA CCM or APH |
| U91 | Transmission Control Unit (TCU) | Synchronizer potentiometer signal is out of range for F1 position. | Full repair manual for code U91, Transmission Control Unit (TCU) |
| U92 | Transmission Control Module / ECU | Synchronizer potentiometer signal is out of range for F3 position | Full repair manual for code U92, Transmission Control Module / ECU |
| U93 | Transmission Control Unit (TCU) | F1 did not engage properly. | Full repair manual for code U93, Transmission Control Unit (TCU) |
| U94 | Transmission Control Unit (TCU) / Universal Controller | Transmission F3 (Forward 3) synchronizer did not engage properly | Full repair manual for code U94, Transmission Control Unit (TCU) / Universal Controller |
| U95 | Transmission Control Module (TCU) / Transmission Controller | Synchro potentiometer signal is out of range for F2 position | Full repair manual for code U95, Transmission Control Module (TCU) / Transmission Controller |
| U96 | Transmission Controller (Transmission ECU) | Synchro potentiometer signal is out of range for R1 position. | Full repair manual for code U96, Transmission Controller (Transmission ECU) |
| U97 | Transmission Control Module (TCU) / Transmission Controller | F2 (Forward 2) gear did not engage properly | Full repair manual for code U97, Transmission Control Module (TCU) / Transmission Controller |
| U98 | Transmission Control Module (TCM) / Central Control Unit (CCU) | R1 did not engage properly | Full repair manual for code U98, Transmission Control Module (TCM) / Central Control Unit (CCU) |
| U99 | Transmission Control Unit (TCU) | Syncro potentiometer signal is out of range for R2 position. | Full repair manual for code U99, Transmission Control Unit (TCU) |
| UO8 | Electronic Management Unit (EMU), MTA CCM, APH, Armrest, or TMF | Suspension is unable to reach maximum height within 20 seconds | Full repair manual for code UO8, Electronic Management Unit (EMU), MTA CCM, APH, Armrest, or TMF |
