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OBD II Fault Code

  • OBD II P0656

    OBD-II Code Powertrain Control Module (PCM) failure is defined as a Fuel Level Output Circuit

    The Fuel Level Gauge should make a sweep when the key is initially turned on. If Gauge fails to move, the engine control module (PCM) will set code P0656.

    Common Problems That Trigger the P0656 Code

    • Instrument cluster failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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