Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Jeep Compass Altitude, FWDFACTORY OEM SERVICE PROCEDURE
Module, Electric Power Steering (EPS)
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| B12A3-00 | INSTRUMENT CLUSTER LED LAMP FAULT |
| C0051-25 | STEERING WHEEL POSITION SENSOR - SIGNAL SHAPE / WAVEFORM FAILURE |
| C0051-54 | STEERING WHEEL POSITION SENSOR - MISSING CALIBRATION |
| C1592-01 | ELECTRONIC POWER STEERING MOTOR CIRCUIT - GENERAL ELECTRICAL FAILURE |
| C1593-49 | STEERING TORQUE SENSOR CIRCUIT - INTERNAL ELECTRONIC FAILURE |
| C15DB-00 | EPS DISABLED |
| C15E9-24 | DYNAMIC STEERING TORQUE REQUEST DENIED - SIGNAL STUCK HIGH |
| C15E9-27 | DYNAMIC STEERING TORQUE REQUEST DENIED - SIGNAL RATE OF CHANGE ABOVE THRESHOLD |
| C15E9-35 | DYNAMIC STEERING TORQUE REQUEST DENIED - SIGNAL HIGH TIME > MAXIMUM |
| C15E9-86 | DYNAMIC STEERING TORQUE REQUEST DENIED - SIGNAL INVALID |
| C2100-00 | BATTERY VOLTAGE LOW |
| C2101-00 | BATTERY VOLTAGE HIGH |
| C2129-13 | BATTERY VOLTAGE - CIRCUIT OPEN |
| C2129-1C | BATTERY VOLTAGE - CIRCUIT VOLTAGE OUT OF RANGE |
| C2203-00 | CURRENT VIN MISSING/MISMATCH |
| C2210-00 | ECU OVERTEMPERATURE |
| C2217-00 | ELECTIC POWER STEERING MODULE INTERNAL |
| C221F-00 | ECU NOT INITIALIZED |
| C2223-00 | ECU CONFIGURATION MISMATCH |
| U0055-00 | CAN CH BUS |
| U0056-00 | CAN CH BUS OFF PERFORMANCE |
| U0121-00 | LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE |
| U0140-00 | LOST COMMUNICATION WITH BODY CONTROL MODULE |
| U0159-00 | LOST COMMUNICATION WITH PARKING ASSIST CONTROL MODULE (PAM) |
| U0415-00 | IMPLAUSIBLE DATA RECEIVED FROM ABS |
| U0415-86 | IMPLAUSIBLE DATA RECEIVED FROM ABS - SIGNAL INVALID |
| U0422-00 | INVALID DATA RECEIVED FROM BODY CONTROL MODULE |
| U045A-00 | IMPLAUSIBLE DATA RECEIVED FROM PARKING ASSIST MODULE |
| U045A-85 | IMPLAUSIBLE DATA RECEIVED FROM PARKING ASSIST MODULE - SIGNAL ABOVE ALLOWABLE RANGE |
| U045A-92 | IMPLAUSIBLE DATA RECEIVED FROM PARKING ASSIST MODULE - PERFORMANCE OR INCORRECT OPERATION |
| U1215-00 | LOST COMMUNICATION WITH FORWARD FACING CAMERA |
| U148D-00 | IMPLAUSIBLE DATA RECEIVED FROM FORWARD FACING CAMERA |
| U148D-27 | IMPLAUSIBLE DATA RECEIVED FROM FORWARD FACING CAMERA - SIGNAL RATE OF CHANGE ABOVE THRESHOLD |
| U148D-49 | IMPLAUSIBLE DATA RECEIVED FROM FORWARD FACING CAMERA - INTERNAL ELECTRONIC FAILURE |
| U148D-85 | IMPLAUSIBLE DATA RECEIVED FROM FORWARD FACING CAMERA - SIGNAL RATE OF CHANGE ABOVE THRESHOLD |
| U148D-86 | IMPLAUSIBLE DATA RECEIVED FROM FORWARD FACING CAMERA - SIGNAL INVALID |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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