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 TrailhawkFACTORY OEM SERVICE PROCEDURE
Module, Comfort Seat And Wheel (CSWM)
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| B10C4-11 | HEATED STEERING WHEEL CONTROL - CIRCUIT SHORT TO GROUND |
| B10C4-12 | HEATED STEERING WHEEL CONTROL - CIRCUIT SHORT TO BATTERY |
| B10C4-13 | HEATED STEERING WHEEL CONTROL - CIRCUIT OPEN |
| B10C4-19 | HEATED STEERING WHEEL CONTROL-OVERCURRENT |
| B10C4-4B | HEATED STEERING WHEEL CONTROL-OVER TEMPERATURE |
| B10C4-92 | HEATED STEERING WHEEL CONTROL-PERFORMANCE OR INCORRECT OPERATION |
| B11C1-13 | STEERING WHEEL HEATER POWER SUPPLY - CIRCUIT OPEN |
| B1E99-11 | FRONT LEFT HEATER CONTROL CIRCUIT - CIRCUIT SHORT TO GROUND |
| B1E99-12 | FRONT LEFT HEATER CONTROL CIRCUIT - CIRCUIT SHORT TO BATTERY |
| B1E99-13 | FRONT LEFT HEATER CONTROL CIRCUIT - CIRCUIT OPEN |
| B1E99-4B | FRONT LEFT HEATER CONTROL 1-OVER TEMPERATURE |
| B1E99-92 | FRONT LEFT HEATER CONTROL 1-PERFORMANCE OR INCORRECT OPERATION |
| B1E9A-11 | FRONT RIGHT HEATER CONTROL CIRCUIT - CIRCUIT SHORT TO GROUND |
| B1E9A-12 | FRONT RIGHT HEATER CONTROL CIRCUIT - CIRCUIT SHORT TO BATTERY |
| B1E9A-13 | FRONT RIGHT HEATER CONTROL CIRCUIT - CIRCUIT OPEN |
| B1E9A-4B | FRONT RIGHT HEATER CONTROL 1-OVER TEMPERATURE |
| B1E9A-92 | FRONT RIGHT HEATER CONTROL 1-PERFORMANCE OR INCORRECT OPERATION |
| B1E9D-12 | FRONT LEFT VENT CONTROL CIRCUIT-CIRCUIT SHORT TO BATTERY |
| B1E9D-14 | FRONT LEFT VENT CONTROL CIRCUIT-CIRCUIT SHORT TO GROUND OR OPEN |
| B1E9E-12 | FRONT RIGHT VENT CONTROL CIRCUIT-CIRCUIT SHORT TO BATTERY |
| B1E9E-14 | FRONT RIGHT VENT CONTROL CIRCUIT-CIRCUIT SHORT TO GROUND OR OPEN |
| B1EB1-1A | FRONT LEFT SEAT HEATER SENSOR - CIRCUIT RESISTANCE BELOW THRESHOLD |
| B1EB1-1B | FRONT LEFT SEAT HEATER SENSOR - CIRCUIT RESISTANCE ABOVE THRESHOLD |
| B1EB2-1A | FRONT RIGHT SEAT HEATER SENSOR - CIRCUIT RESISTANCE BELOW THRESHOLD |
| B1EB2-1B | FRONT RIGHT SEAT HEATER SENSOR - CIRCUIT RESISTANCE ABOVE THRESHOLD |
| B210C-17 | BATTERY VOLTAGE - CIRCUIT VOLTAGE ABOVE THRESHOLD |
| B2199-16 | BATTERY VOLTAGE-CIRCUIT VOLTAGE BELOW THRESHOLD |
| B21DD-84 | SYSTEM VOLTAGE-SIGNAL BELOW ALLOWABLE RANGE |
| B21DD-85 | SYSTEM VOLTAGE-SIGNAL ABOVE ALLOWABLE RANGE |
| B227E-00 | ECU OVER TEMPERATURE |
| B22A9-00 | ECU INTERNAL PERFORMANCE |
| U0020-00 | CAN B BUS OFF PERFORMANCE |
| U0140-00 | LOST COMMUNICATION WITH BODY CONTROL MODULE |
| U0155-00 | LOST COMMUNICATION WITH CLUSTER-CCN |
| U1446-00 | IMPLAUSIBLE HEATED STEERING WHEEL TEMPERATURE MESSAGE RECEIVED (CCN)- |
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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