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What Does P0602 Code Mean?

    OBD-II Code P0602 is defined as a Control Module Programming Error

    The engine control module (PCM) performs many vital functions in a modern vehicle, including management of the Fuel and Ignition Systems. The PCM regularly runs a self-diagnosis function where it performs normal mathematical calculations, and if the results of these calculations are not as expected the PCM will set code P0602.

    P0602 Symptoms

    • Decreased engine performance
    • Engine may not start
    • Engine may stall

    Common Problems That Trigger the P0602 Code

    • Powertrain Control Module (PCM) failure
    • Wiring issue

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