Toyota Error Codes

  • DTC P0300

    DTC P0300

    The P0300 code indicates random or multiple misfires, which can stem from ignition, fuel, air intake, or mechanical issues.

  • DTC P0301-P0308

    DTC P0301-P0308

    The P0301-P0308 signal misfires in specific cylinders, often caused by ignition, fuel, air intake, or mechanical issues.

  • DTC P0401

    DTC P0401

    The P0401 error code indicates insufficient EGR flow, typically due to carbon buildup, faulty components, or vacuum leaks.

  • DTC P0420 and P0430

    DTC P0420 and P0430

    The P0420 and P0430 error codes are related to the catalytic converter or oxygen sensors.

  • DTC P0121

    DTC P0121

    The P0121 is typically related to issues with the Throttle Position Sensor or throttle body.

  • DTC P0171 and P0174

    DTC P0171 and P0174

    The P0171 and P0174 indicate a lean air-fuel mixture, often caused by vacuum leaks, faulty sensors, or fuel delivery issues.