OBD II Fault Code


    OBD-II Code Diagonostic Trouble Code is defined as a nox Exceedence - Low Reagent Consumption

    The purpose of the reductant system (DEF) is to reduce the amount of NOx released by the diesel engine. The engine computer (PCM) uses multiple NOx sensors to confirm the performance of the reductant system. If excessive emissions are detected, the PCM will deactive other systems to prevent additional component damage. Code P2BAA will be set.Additional codes will be stored. Those codes will need to be diagnosed and repaired.

    Common Repairs Needed for the P2BAA Code

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