P0921

2017-10-10

Description:

  • The fault code P0921 indicates a problem in the circuit of the gear shift forward actuator. It means that the transmission control module (TCM) has detected an abnormality in the performance of the actuator that is responsible for moving the transmission into the forward gear position.

Possible Symptoms:

  • Difficulty in shifting the vehicle into the forward gear

  • Delayed or no response when shifting into forward gear

  • The transmission may get stuck in neutral or another gear

  • Illuminated check engine light

Possible Causes:

  • Faulty or damaged gear shift forward actuator

  • Electrical circuit issues, such as wiring problems or loose connections

  • Failed transmission control module

  • Hydraulic problems in the transmission system

Related Parts:

  • Gear Shift Position Sensor: Gear Shift Position Sensor communicates the position of the gear to the car computer. This car's sensor has a problem which may cause difficulty in shifting gears

Possible Solutions:

  • Replace the faulty gear shift forward actuator

  • Inspect and repair the electrical circuit, including any damaged wiring or loose connections

  • Replace the transmission control module if necessary

  • Check and repair any hydraulic issues related to the transmission system

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