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Our automotive experts have put together the following information about the P0233 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 P0233 code.

OBD II Fault Code

  • OBD II P0233

    OBD-II Code Decreased engine performance is defined as a Fuel Pump Secondary Circuit Intermittent

    The Fuel Pump enables the transfer of fuel from the fuel tank to the fuel injectors in the engine. The Fuel Pump is controlled by the engine computer (PCM) or the Fuel Pump Control Module (most newer vehicles). When the Ignition is turned on, the PCM or Fuel Pump Control Module will activate the fuel pump. If the PCM detects an incorrect signal to or from the fuel pump, it will set code P0233.

    Decreased engine performance Symptoms

    • Decreased engine performance
    • Engine may not start

    Common Problems That Trigger the P0233 Code

    • Fuel pump failure
    • Fuel pump relay failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

    Common Repairs Needed for the P0233 Code

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