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OBD II Fault Code

  • OBD II P226B

    OBD-II Code Decreased engine performance is defined as a Turbocharger/Supercharger Boost Pressure Too High - Mechanical

    The engine control module (PCM) uses sensors to determine if the Turbocharger/Supercharger is providing the requested amount of boost. If the PCM determines that the requested amount of boost is not being provided, the PCM will set code P226B.

    Decreased engine performance Symptoms

    • Decreased engine performance
    • Increased fuel consumption
    • Lack of boost from the turbo/supercharger

    Common Problems That Trigger the P226B Code

    • Brake booster pressure sensor failure
    • Manifold Absolute Pressure (MAP) sensor failure
    • Powertrain Control Module (PCM) failure
    • Turbo/supercharger control solenoid failure
    • Turbo/supercharger failure
    • Wiring issue
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