P2129 Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit Intermittent
Quick Answer
The P2129 diagnostic trouble code refers to an issue with the Throttle/Pedal Position Sensor/Switch 'E' Circuit Intermittent. Common causes include Faulty throttle position sensor, Damaged wiring or connectors, Issues with the engine control module. 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
- P2129 indicates Throttle/Pedal Position Sensor/Switch 'E' Circuit Intermittent.
- Common causes
- Common causes include Faulty throttle position sensor, Damaged wiring or connectors, Issues with the engine control module.
- 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.
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Code P2129 Description
The P2129 diagnostic trouble code refers to an issue with the Throttle/Pedal Position Sensor/Switch 'E' Circuit Intermittent. This code indicates that there is a problem with the communication between the throttle position sensor and the engine control module. The throttle position sensor is responsible for monitoring the position of the throttle pedal and sending this information to the engine control module to adjust the air-fuel mixture for optimal performance. When this circuit is intermittent, it means that there are inconsistencies in the signal being sent, which can lead to a variety of performance issues.
Common Causes of P2129
- Faulty throttle position sensor
- Damaged wiring or connectors
- Issues with the engine control module
- Corrosion or debris in the sensor or connector
- Electrical interference or shorts in the circuit
Symptoms of P2129
- Poor acceleration
- Rough idling
- Stalling
- Lack of response when pressing on the gas pedal
- Vehicle going into "limp mode"
How to Fix P2129
- Begin by conducting a thorough inspection of the throttle position sensor, wiring, and connectors to identify any visible damage or corrosion.
- Test the throttle position sensor using a multimeter to check for proper voltage output and signal consistency.
- If the sensor is faulty, replace it with a new one and ensure proper calibration.
- Check and repair any damaged wiring or connectors, ensuring a secure connection.
- Clear the diagnostic trouble codes from the engine control module and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P2129
The typical repair costs for addressing a P2129 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, replacing a throttle position sensor can cost between $100 and $200, while addressing wiring or connector issues may range from $50 to $150. Additional costs for diagnostic time and labor should also be considered, with rates typically ranging from $80 to $150 per hour. It is advisable to check with local repair shops for a more accurate estimate based on your vehicle make and model.
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Code P2129 Information for Specific Makes
- P2129 Dodge — Throttle/Pedal Position Sensor/Switch 'E' Circuit Intermittent
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