P0940
PowertrainTransmission Pressuremoderate severityHydraulic Oil Temperature Sensor Circuit Low
What P0940 Means
The hydraulic oil temperature sensor signal is lower than expected. This usually results from an open circuit or grounded wiring.
Symptoms
- Transmission warning light on
- Poor shift performance
- Incorrect temperature data
Common Causes
- Faulty oil temperature sensor
- Open or grounded wiring
- Loose connector
- Control module fault
Diagnostic Steps
- Retrieve diagnostic codes
- Inspect wiring for open or ground fault
- Check connector integrity
- Measure sensor resistance
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