P0971 Code - Pressure Control Solenoid 'C' Control Circuit High

Discussion in 'P - Powetrain Codes' started by fault code, Mar 31, 2018.

  1. fault code

    fault code Administrator Staff Member

    May 11, 2017
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    What does P0971 Mean?

    OBD-II Code P0971 is defined as a Pressure Control Solenoid "C" Control Circuit High

    The Transmission Fluid Pressure Solenoid allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the electrical circuit to or from this solenoid, the PCM or TCM will set code P0971.

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    What are the common causes of P0971 ?

    Many things can cause the P0971 code to be detected, such as:
    • Faulty valve C pressure control solenoid
    • Low transmission fluid level
    • Dirty or contaminated transmission fluid
    • Defective high pressure pump
    • Damaged electrical components, such as wires, connectors, and fuses
    • Hydraulic blockages in the internal transmission hydraulic system
    • Mechanical problems in the internal transmission
    • In very rare cases, a defective PCM or transmission control module (TCM)

    How do you troubleshoot P0971 ?

    Deactivation of cylinders is achieved by releasing a synchroniser pin that normally interlocks the cam follower and rocker arms. P0971 code resolves the synchroniser pin is released using hydraulic pressure which is controlled by a dedicated solenoid.

    Searches related to P0971 Code - Pressure Control Solenoid 'C' Control Circuit High
    • P0971
    • P0972

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