Engine-CodesGeneric – P0229

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

Quick Answer

The P0229 diagnostic trouble code (DTC) indicates that there is an intermittent issue with the Throttle/Pedal Position Sensor/Switch 'C' circuit. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0229 indicates Throttle/Pedal Position Sensor/Switch 'C' Circuit Intermittent.
Common causes
Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P0229 Description

The P0229 diagnostic trouble code (DTC) indicates that there is an intermittent issue with the Throttle/Pedal Position Sensor/Switch 'C' circuit. This sensor is responsible for monitoring the position of the throttle pedal and transmitting this information to the engine control module (ECM). The ECM uses this data to adjust the air-fuel mixture and control the throttle body accordingly.

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

Common Causes of P0229

  1. Faulty throttle position sensor.
  2. Damaged wiring or connectors in the sensor circuit.
  3. Corrosion or poor connections in the sensor circuit.
  4. Malfunctioning engine control module (ECM).
  5. Environmental factors such as moisture or debris affecting sensor operation.

Symptoms of P0229

  1. Engine hesitation or lack of response when pressing the throttle pedal.
  2. Sudden acceleration or surging while driving.
  3. Rough idling or stalling at idle.
  4. Check Engine Light illuminated on the dashboard.
  5. Reduced fuel efficiency.

How to Fix P0229

  1. Begin by diagnosing the issue using a diagnostic scanner to retrieve the specific trouble code and verify the sensor's operation.
  2. Inspect the wiring and connectors associated with the throttle position sensor for any damage, corrosion, or loose connections.
  3. Test the throttle position sensor's voltage and resistance to determine if it is functioning within specifications.
  4. If the sensor is faulty, replace it with a new OEM or high-quality aftermarket sensor.
  5. Clear the trouble code and perform a test drive to verify that the issue has been resolved.

Cost to Fix P0229

The typical repair costs for addressing a Throttle/Pedal Position Sensor/Switch 'C' Circuit Intermittent issue can range from $150 to $400, including parts and labor. However, prices may vary depending on the vehicle make and model, location, and the specific repair shop's labor rates. It's advisable to consult with a qualified mechanic or dealership to obtain an accurate cost estimate based on your vehicle's requirements.

When is the Code Detected?

An Intermittent voltage from the Throttle Position Sensor (TPS) is sent to Engine Control Module (ECM).

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Code P0229 Information for Specific Makes

  • P0229 Chrysler — Instrument Cluster Message Ambient Temperature Signal Plausibility
  • P0229 Ford — Throttle/Pedal Position Sensor/Switch 'C' Circuit Intermittent
  • P0229 Mercedes-Benz — Throttle/Pedal Position Sensor/Switch 'C' Circuit Intermittent
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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