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Our automotive experts have put together the following information about the P0555 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 P0555 code.

OBD II Fault Code

  • OBD II P0555

    OBD-II Code Powertrain Control Module (PCM) failure is defined as a Brake Booster Pressure Sensor Circuit

    The Brake Booster uses vacuum to make the brake pedal easier to depress when braking. The Brake Booster Pressure Sensor measures the amount of vacuum inside the brake booster. If the engine computer sees an implausible signal from the Brake Booster Pressure Sensor, code P0555 will be set.

    Common Problems That Trigger the P0555 Code

    • Brake booster pressure sensor failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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