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  • P0234 Turbo Boost Limit Exceeded

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    Mopar1973Man

    DTC P0234: TURBO BOOST LIMIT EXCEEDED

    Monitor & Set Conditions

    Turbo boost limit is monitored when the ignition is on. DTC may be stored if Engine Control Module (ECM) senses engine speed is greater than 2200 RPM with no intake air pressure sensor out of range DTCs present.

    Possible Causes

    • Mechanical Wastegate Failure
    • Wastegate Stuck

    Testing

    1. Turn ignition on with engine off. Using DRBIII(R) scan tool, check for DTCs. If DTC Good Trip Counter is not equal to zero for P0234, go to next step. If DTC Good Trip Counter is equal to zero for P0234, replace wastegate. It may be necessary to replace turbocharger and wastegate as an assembly. See appropriate REMOVAL, OVERHAUL & INSTALLATION article.

    2. Ensure ignition is on with engine off. Using scan tool, read and record FREEZE FRAME data. Road test vehicle under conditions displayed in FREEZE FRAME data and note DTC Good Trip Counter for P0234. If DTC Good Trip Counter does not change to zero, the test is complete. If DTC Good Trip Counter changes to zero, replace wastegate. It may be necessary to replace turbocharger and wastegate as an assembly. See appropriate REMOVAL, OVERHAUL & INSTALLATION article.



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