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OBD II Fault Code

  • OBD II P0066

    OBD-II Code Increased fuel consumption is defined as a Air Assisted Injector Control Circuit or Circuit Low

    The Air Assist Injector allows the engine to reach operating temperature faster on startup. When the engine control module (PCM) detects an incorrect signal from the Air Assist Injector, it will set code P0066.

    Increased fuel consumption Symptoms

    • Increased fuel consumption

    Common Problems That Trigger the P0066 Code

    • Powertrain Control Module (PCM) failure
    • Throttle body assembly failure
    • Wiring issue

    Common Repairs Needed for the P0066 Code

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