C00944WD/AWD Rear Differential Unit Temperature Sensor
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- Covers the temperature sensor of the rear differential unit in an all-wheel-drive system, used to protect the rear drive module and its electronically controlled coupling from overheating. Prolonged torque transfer to the rear axle heats the clutch and fluid; the controller reads this sensor and limits engagement when it gets too hot. This code is set when the sensor signal is out of range, open, shorted or implausible. FCA documents C0094-4B on the Jeep Compass in the rear drive/AWD context. A fault removes thermal protection for the rear unit and can force reduced engagement, setting the AWD/4WD warning lamp; braking and ABS are unaffected. It is the rear-axle counterpart of the power-transfer-unit temperature sensor C0093. The entry follows the SAE J2012 generic definition.
- What you may notice
- AWD/4WD warning lamp on
- Reduced rear-axle engagement for protection
- No thermal protection of the rear unit
- Likely causes
- LikelyTemperature sensor out of range or failed
- PossibleHarness or connector fault
- RareGenuine rear unit overheating event
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €150 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.