C129E Code - Brake Pedal Position Sensor 4 Circuit High Input
Quick Answer
The C129E code indicates a problem with the brake pedal position sensor 4 circuit, specifically a high input. Common causes include Faulty brake pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connection. 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
- C129E indicates Brake Pedal Position Sensor 4 Circuit High Input.
- Common causes
- Common causes include Faulty brake pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connection.
- 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 C129E Description
The C129E code indicates a problem with the brake pedal position sensor 4 circuit, specifically a high input. This sensor is responsible for monitoring the position of the brake pedal and sending this information to the vehicle's engine control module (ECM) or powertrain control module (PCM). When the sensor detects a high input signal, it means that the voltage being sent to the ECM/PCM is above the expected range, indicating a potential issue with the sensor or its circuit.
Common Causes of C129E
- Faulty brake pedal position sensor
- Damaged wiring or connectors in the sensor circuit
- Corrosion or contamination in the sensor connection
- ECM/PCM software or hardware issues
- Brake system fluid leaks affecting sensor performance
Symptoms of C129E
- Illuminated brake warning light on the dashboard
- Inconsistent or delayed brake response
- ABS system malfunctions
- Vehicle stability control system errors
- Loss of cruise control functionality
How to Fix C129E
- Begin by conducting a visual inspection of the brake pedal position sensor and its wiring harness for any obvious signs of damage or corrosion.
- Use a multimeter to test the sensor's resistance and voltage output to determine if it is functioning within specified parameters.
- Check the sensor's connection to the ECM/PCM for proper seating and secure connection.
- If the sensor is faulty, replace it with a new OEM or high-quality aftermarket sensor.
- Clear the diagnostic trouble codes from the vehicle's memory using a scan tool and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix C129E
The cost of repairing a brake pedal position sensor circuit high input issue can vary depending on the extent of the problem and the specific components that need to be replaced. In general, the parts cost for a new brake pedal position sensor can range from $50 to $150, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue is typically in the range of $150 to $450. It's important to note that these estimates are approximate and can vary based on factors such as the vehicle's make and model, labor rates in your area, and any additional repairs or services that may be required. Be sure to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate for your specific situation.
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Code C129E Information for Specific Makes
- C129E Buick — Brake Pedal Position Sensor 4 Circuit High Input
- C129E Cadillac — Brake Pedal Position Sensor 4 Circuit High Input
- C129E Chevrolet — Brake Pedal Position Sensor 4 Circuit High Input
- C129E GMC — Brake Pedal Position Sensor 4 Circuit High Input
Frequently Asked Questions about C129E Code
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