P0953

2017-10-10

Description:

  • The fault code P0953 indicates a high voltage condition in the auto shift manual control circuit. This circuit is responsible for controlling the operation of the automatic shift manual mode, allowing the driver to manually shift gears. A high voltage condition in this circuit can prevent proper functioning or result in erratic behavior of the auto shift manual control system.

Possible Symptoms:

  • Check Engine Light illuminated

  • Erratic behavior of the auto shift manual control system

  • Difficulty or inability to shift gears manually in the automatic shift manual mode

  • Malfunction or unresponsiveness of the auto shift manual control switch

Possible Causes:

  • Faulty auto shift manual control switch

  • Wiring or connection issues in the auto shift manual control circuit

  • High battery voltage or electrical system malfunction

  • Faulty transmission control module (TCM)

  • Incorrect programming or calibration of the TCM

Related Parts:

  • Auto Shift:

Possible Solutions:

  • Inspect the auto shift manual control switch for any signs of damage or malfunction. If necessary, replace the switch.

  • Check the wiring and connections in the auto shift manual control circuit for any damage, corrosion, or loose connections. Repair or replace as needed.

  • Ensure that the battery voltage is within the proper range and the electrical system is in good condition. Check for any issues with the charging system or voltage regulator.

  • If the above steps do not resolve the issue, further diagnosis of the transmission control module (TCM) may be necessary. This may involve checking for software updates, reprogramming, or replacing the TCM.

  • It is recommended to consult a professional mechanic or dealership for accurate diagnosis and appropriate repairs.

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