P0920 Code - Gear Shift Forward Actuator Circuit/Open

Discussion in 'P - Powetrain Codes' started by fault code, Mar 29, 2018.

  1. fault code

    fault code Administrator Staff Member

    May 11, 2017
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    What does P0920 Mean?

    The Transmission Control Module (TCM) monitors the Gear Shift Forward Actuator. The TCM sets the OBDII code when the Gear Shift Forward Actuator is not to factory specifications.

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    What are the common causes of P0920 ?
    • An air leak forward of the DPF will change the sensor readings resulting in the code
    • Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
    • A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

    How do you troubleshoot P0920 ?

    Like the all engines, the car engine system employs specially developed hydraulic lifters (known as switching roller followers) for the P0920 code intake and exhaust valves. The lifters can be collapsed by disengaging an internal locking pin. The locking pin is disengaged using solenoids to alter oil pressure fed into the lifter.

    Searches related to P0920 Code - Gear Shift Forward Actuator Circuit/Open
    • P0920
    • P0921

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