The P0877 trouble code indicates that there is a low voltage condition detected in the transmission fluid pressure sensor or switch “D” circuit.
P0877 Transmission Fluid Pressure Sensor/Switch “D” Circuit Low
Code symptoms P0877.
1. Illumination of the Check Engine Light (CEL).
2. Harsh or delayed shifting from the transmission.
3. Transmission may fail to shift gears properly.
4. Reduced fuel efficiency.
5. Transmission overheating may occur in severe cases.
Causes of the code P0877.
1. Faulty transmission fluid pressure sensor or switch “D.”
2. Damaged or corroded wiring and connectors associated with the circuit.
3. Low transmission fluid level or contaminated fluid.
4. Internal transmission problems.
5. Issues with the transmission control module (TCM).
Code Solutions P0877.
1. Repair or replace any damaged wiring or connectors in the circuit.
2. Ensure good electrical connections and clean any corrosion from connectors.
3. If the transmission fluid level is low, top it up to the recommended level with the correct fluid.
4. Replace the transmission fluid pressure sensor or switch “D” if it’s found to be faulty.
5. If internal transmission problems are suspected, further diagnostics or repairs may be necessary.
6. Clear the trouble codes from the vehicle’s computer after repairs are complete.
7. Test drive the vehicle to confirm that the issue has been resolved.