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OBD II Fault Code

  • OBD II P022B

    OBD-II Code Powertrain Control Module (PCM) failure is defined as a Charge Air Cooler Bypass Control "A" Circuit Low

    The Air Flap Actuator restricts airflow through the charge air cooler. The engine control module (PCM) controls the Air Flap Actuator. If the PCM cannot control the actuator, it will set code P022B.The PCM may also disable the turbo or supercharger to prevent further damage to the system.

    Powertrain Control Module (PCM) failure Symptoms

    • Lack of boost from the turbo/supercharger

    Common Problems That Trigger the P022B Code

    • Air flap actuator failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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