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OBD II Fault Code

  • OBD II P064D

    OBD-II Code Decreased engine performance is defined as a Internal Control Module O2 Sensor Processor Performance

    The engine control module (PCM) performs many vital functions in a modern vehicle, such as management of the Fuel System, Ignition System, Transmission, Anti-Lock Brake and Traction Control 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 P064D.

    Decreased engine performance Symptoms

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

    Common Problems That Trigger the P064D Code

    • Powertrain Control Module (PCM) failure
    • Wiring issue

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