P0821

2017-10-10

Description:

  • The fault code P0821 relates to a problem with the gear lever X position circuit. This code typically indicates an issue with the electrical circuitry or connection associated with the gear lever position sensor, which is responsible for detecting the position of the gear lever or selector in a manual transmission or automatic transmission system.

Possible Symptoms:

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

  • Incorrect gear selection display on the instrument panel

  • Inability to shift gears or engage certain gears

  • Erratic or inconsistent gear shifting behavior

  • Potential limited drivability due to gear selection issues

Possible Causes:

  • Faulty gear lever position sensor

  • Wiring or connection problems in the gear lever position circuit

  • Loose or corroded connectors in the transmission system

  • Faulty transmission control module (TCM)

  • Intermittent issues with the gear lever mechanism

Related Parts:

  • Gear Lever Position Sensor: Gear Lever Position Sensor communicates the position of the gear to the car computer. Problems lead to difficulty in shifting gears

Possible Solutions:

  • Test and replace the faulty gear lever position sensor, if necessary

  • Inspect and repair the gear lever position circuit for any issues, such as damaged wires or connectors

  • Ensure the connectors in the transmission system are secure and free from corrosion

  • Test the transmission control module (TCM) for proper functionality and replace it if necessary

  • Inspect the gear lever mechanism for any intermittent issues and repair as needed

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