P0959

2017-10-10

Description:

  • The fault code indicates an intermittent issue with the auto shift manual mode circuit. This circuit is responsible for controlling the automatic transmission's ability to switch between automatic and manual shift modes. An intermittent fault suggests that there may be a problem with the circuit's electrical connections, wiring, or components, leading to sporadic functionality of the auto shift manual mode.

Possible Symptoms:

  • Intermittent or sporadic functionality of the auto shift manual mode

  • Inability to switch between automatic and manual shift modes

  • Warning lights or messages related to the transmission or manual mode

  • Altered shifting behavior, such as unexpected gear changes or inability to shift gears manually

Possible Causes:

  • Loose or corroded electrical connections in the auto shift manual mode circuit

  • Damaged or faulty wiring harness related to the circuit

  • Malfunctioning auto shift manual mode switch or sensor

  • Faulty transmission control module (TCM)

  • Possible

Related Parts:

  • Auto Shift:

Possible Solutions:

  • Inspect and clean the electrical connections in the auto shift manual mode circuit, ensuring a secure and corrosion

  • free connection

  • Check the wiring harness for any signs of damage or wear, and repair or replace as necessary

  • Test and replace the auto shift manual mode switch or sensor if it is determined to be faulty

  • If other transmission

  • related issues are present, diagnose and repair them accordingly

  • In some cases, the transmission control module (TCM) may require reprogramming or replacement

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