C0094
4WD/AWD Rear Differential Unit Temperature Sensor
What it means
C0094 means 4WD/AWD Rear Differential Unit Temperature Sensor.
Where it lives
For C0094, the part to look at first is the sensor named here.
Check these first
- The differential temperature sensor fouled by oil
- A failed sensing element inside the sensor
- A drifting or erratic temperature signal
- A sensor that does not match the differential unit
- A loose or corroded sensor connector
What to do next
- Compare the sensor reading to the fluid temperature
- Inspect the sensor and connector for leaks or damage
- Check the rear differential fluid level
- Replace the sensor if the signal stays wrong
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.