P0819 Code - Up And Down Shift Switch To Transmission Range Correlation

Discussion in 'P - Powetrain Codes' started by fault code, Mar 25, 2018.

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  1. fault code

    fault code Administrator Staff Member

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    What does P0819 Mean?

    The Transmission Control Module (TCM) monitors the Up And Down Shift Switch signal. The TCM sets the OBDII code when the Up And Down Shift Switch signal is not to factory specifications.

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    What are the common causes of P0819 ?
    • The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
    • Defective ECU strategies or components will prevent proper regeneration
    • A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
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    How do you troubleshoot P0819 ?

    The most common repairs for a P0819 are as follows:
    • Replacing the up- and down-shift switch
    • Replacing electrical connectors for the switch
    • Replacing damaged wiring

    Searches related to P0819 Code - Up And Down Shift Switch To Transmission Range Correlation
    • P0819
    • P0818
     

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