P0077 Code - Intake Valve Control Solenoid Circuit High Bank 1

Discussion in 'P - Powetrain Codes' started by fault code, Dec 4, 2017.

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  1. fault code

    fault code Administrator Staff Member

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    What Does P0077 Mean?

    This code indicates that the PCM has detected a higher than normal voltage reading (or degree of resistance) from the VVT circuit that controls intake valve timing for engine bank 1.

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    Possible causes

    • Faulty Intake Valve Control Solenoid Bank 1
    • Intake Valve Control Solenoid Circuit Bank 1 harness is open or shorted
    • Intake Valve Control Solenoid Circuit Bank 1 circuit poor electrical connection

    When is the code detected?
    • An improper voltage is sent to the Engine Control Module (ECM) through intake valve timing control solenoid valve.
    • Symptoms
    • Engine Light ON (or Service Engine Soon Warning Light)
    How do you troubleshoot P0077 ?
    • Repairing open or short in the intake valve control solenoid circuit
    • Replacing or repairing connectors and wiring
    • Replacing the solenoid control valve
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