P0878
Transmission Fluid Pressure Sensor/Switch D Circuit High
P0878 is an OBD-II diagnostic trouble code meaning: Transmission Fluid Pressure Sensor/Switch D Circuit High. Common causes: transmission fluid pressure sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Incorrect gear shifting
- Transmission transition to emergency mode
- Jerking when shifting gears
- Check engine light comes on
- Reduced transmission efficiency
Causes
- Transmission fluid pressure sensor malfunction
- Open or short circuit in the sensor circuit
- Connector problems or contact corrosion
- Low transmission fluid level
- Mechanical problems in the transmission hydraulic system
How to Fix
- Check the level and condition of the transmission fluid
- Visually inspect the sensor wiring and connectors
- Test the resistance and output of the sensor
- Check the continuity of the circuit to the control unit
- If necessary, replace the pressure sensor
Related codes
Error P0878 by Vehicle Brand
FAQ
What does the P0878 code mean?
P0878 is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Pressure Sensor/Switch D Circuit High
What causes a P0878 error code?
The most common causes of P0878 include: Transmission fluid pressure sensor malfunction; Open or short circuit in the sensor circuit; Connector problems or contact corrosion; Low transmission fluid level.
How do I fix a P0878 diagnostic trouble code?
To fix P0878: Check the level and condition of the transmission fluid. Visually inspect the sensor wiring and connectors. Test the resistance and output of the sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0878?
Limited driving only, diagnose soon
How much does it cost to fix P0878?
The estimated repair cost for P0878 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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