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Our automotive experts have put together the following information about the P0278 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0278 code.

OBD II Fault Code

  • OBD II P0278

    OBD-II Code Decreased engine performance is defined as a Cylinder 6 Contribution/Balance

    When the engine control module (PCM) detects that cylinder 6 is not sufficiently contributing to keeping the engine running properly, it will set code P0278.

    Decreased engine performance Symptoms

    • Decreased engine performance
    • Increased fuel consumption

    Common Problems That Trigger the P0278 Code

    • Fuel injector failure
    • Internal engine failure
    • Powertrain Control Module (PCM) software needs to be updated
    • Wiring issue

    Common Repairs Needed for the P0278 Code

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