P0954

2017-10-10

Description:

  • The fault code P0954 indicates an intermittent issue 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. An intermittent issue in this circuit can result in erratic behavior or intermittent functioning of the auto shift manual control system.

Possible Symptoms:

  • Intermittent operation of the auto shift manual control system

  • Erratic shifting behavior in the automatic shift manual mode

  • Inability to shift gears manually in the automatic shift manual mode

  • Check Engine Light may illuminate intermittently

Possible Causes:

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

  • Wiring harness issues, such as damaged or frayed wires

  • Faulty auto shift manual control switch

  • Intermittent electrical issues or poor grounding

  • Faulty transmission control module (TCM)

Related Parts:

  • Auto Shift:

Possible Solutions:

  • Inspect all electrical connections in the auto shift manual control circuit for looseness or corrosion. Clean or tighten the connections as necessary.

  • Check the wiring harness for any visible damage, such as frayed wires or insulation wear. Repair or replace any damaged wiring.

  • Test the auto shift manual control switch for proper operation. If faulty, replace the switch.

  • Verify the integrity of the electrical system, including proper grounding and voltage supply. Address any electrical issues found.

  • If the issue persists, further diagnosis of the transmission control module (TCM) may be required. This may involve testing the TCM and checking for any software updates or reprogramming.

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