P0229 Code - Throttle/Petal Position Sensor/Switch 'C' Circuit Intermittent

Discussion in 'P - Powetrain Codes' started by fault code, Dec 19, 2017.

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    fault code Administrator Staff Member

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    What Does P0229 Mean?

    OBD-II Code P0229 is defined as a Throttle/Pedal Position Sensor/Switch "C" Circuit Intermittent

    The Throttle Position Sensor/Switch is located on the Throttle Body of the Intake Manifold and the Pedal Position Sensor/Switch is part of the Accelerator Pedal assembly. These sensors tell the engine control module (PCM) how fast the driver wants to go and how quickly it needs to get up to speed. When the PCM detects a problem with this sensor or the circuit for the sensor, it will set code P0229.The PCM may also limit the speed of the vehicle to 20 miles per hour or less ("Limp home mode") to protect the engine and the driver due to the control module's inability to accurately detect the engine performance being requested.

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    What are the common causes of P0229 ?

    Possible causes of this code include a defective throttle pedal position sensor, loose, corroded, or damaged electrical connector, faulty circuit wiring, faulty or misadjusted TPS pedal position sensor, faulty throttle body, or a faulty PCM. PCM failures are rare.

    How do you troubleshoot P0229 ?
    • Repairing or replacing wiring or connections to the sensor
    • Replacing a defective throttle body control assembly for internal faults
    • Replacing or reprogramming the ECM if directed by the pinpoint tests after all other tests pass and no other faults with the sensor or wiring is found


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