P0877
PowertrainTransmission Pressuremoderate severityTransmission Fluid Pressure Sensor/Switch D Circuit Low
What P0877 Means
The transmission fluid pressure sensor D circuit is reporting a voltage that is too low. This can indicate a short circuit or an actual pressure loss.
Symptoms
- Transmission slipping
- Delayed engagement
- Fault light illuminated
Common Causes
- Low transmission fluid
- Short to ground in wiring
- Failed pressure sensor
- Internal pump or seal leak
Diagnostic Steps
- Verify fluid level
- Check circuit for short to ground
- Measure sensor voltage
- Perform hydraulic pressure test
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