P0877

2017-10-10

Description:

  • The fault code P0877 indicates a low voltage condition in the circuit associated with the transmission fluid pressure sensor or switch 'D'. This code typically points to an issue with the electrical circuitry or connection, resulting in a low voltage signal from the sensor or switch.

Possible Symptoms:

  • Malfunction Indicator Lamp (MIL) or Check Engine Light illuminated

  • Issues with transmission shifting, such as delayed or erratic shifting

  • Abnormal transmission behavior, such as slipping or harsh engagement

  • Inability to engage or disengage certain gears

  • Reduced drivability or performance due to the low voltage condition in the circuit

Possible Causes:

  • Faulty transmission fluid pressure sensor or switch 'D'

  • Wiring or connection problems in the transmission fluid pressure sensor/switch circuit

  • Loose or corroded connectors in the circuit

  • Faulty engine control module (ECM) or other control modules

  • Intermittent low voltage condition in the circuit

Related Parts:

  • Transmission Fluid Pressure Sensor: Gear fluid line delivers gear fluid/oil between the various gear parts that need lubrication. The Gear fluid line pressure Sensor monitors the fluid pressure in the line. Problems lead to difficulty in shifting gears

Possible Solutions:

  • Test and replace the faulty transmission fluid pressure sensor or switch 'D', if necessary

  • Inspect and repair the wiring or connection issues in the circuit

  • Ensure the connectors are securely connected and free from corrosion

  • Test and replace the faulty engine control module (ECM) or other control modules, if necessary

  • Inspect for any intermittent low voltage conditions in the circuit and repair as needed

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