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Our automotive experts have put together the following information about the P2059 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 P2059 code.

OBD II Fault Code

  • OBD II P2059

    OBD-II Code Powertrain Control Module (PCM) failure is defined as a Reductant Injection Air Pump Control Circuit/Open

    Code P2059 sets when the Reductant Injection Air Pump fails to operate properly. This pump injects air into the Reductant (DEF) System.

    Common Problems That Trigger the P2059 Code

    • Powertrain Control Module (PCM) failure
    • Reductant injection air pump failure
    • Wiring issue
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