C129E Chevrolet Code - Brake Pedal Position Sensor 4 Circuit High Input
Quick Answer
The Electronic Brake Control Module (EBCM) uses inputs from the electronic brake control brake pedal position sensor to determine when the brake is applied and how much force is used. Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor circuit poor electrical 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 Chevrolet indicates Brake Pedal Position Sensor 4 Circuit High Input.
- Common causes
- Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor circuit poor electrical 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.
Code C129E Chevrolet Description
What are the Possible Causes of the DTC C129E Chevrolet?
- Faulty Brake Pedal Position Sensor
- Brake Pedal Position Sensor harness is open or shorted
- Brake Pedal Position Sensor circuit poor electrical connection
- Faulty Electronic Brake Control Module (EBCM)
How to Fix the DTC C129E Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C129E Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about C129E Chevrolet Code
1. What does the OBDII code C129E mean on a Chevrolet?
C129E indicates a "Brake Pedal Position Sensor 4 Circuit High Input," meaning the vehicle's computer has detected an issue with the brake pedal position sensor's signal being higher than expected.
2. What are the common symptoms of code C129E?
Symptoms may include the ABS or traction control light illuminating, reduced brake system performance, and possible issues with cruise control or other driver-assist systems.
3. What causes the C129E code to appear?
Common causes include a faulty brake pedal position sensor, damaged sensor wiring or connectors, corrosion in the circuit, or a malfunction in the vehicle’s electronic control module (ECM).
4. Can I drive my Chevrolet with the C129E code?
While the vehicle is typically drivable, it’s not recommended to ignore this code as it may affect safety features like ABS and traction control.
5. How do you diagnose the C129E code?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the brake pedal position sensor and its wiring for damage, and testing the sensor’s output voltage with a multimeter.
6. How do you fix the C129E code on a Chevrolet?
Repairs may involve replacing the brake pedal position sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the ECM if necessary.
7. How much does it cost to repair a C129E code?
The cost varies depending on the issue, but replacing a brake pedal position sensor typically costs between $100 and $300, including parts and labor.
8. Can a faulty brake pedal position sensor cause other problems?
Yes, a faulty sensor can affect ABS, traction control, cruise control, and other braking-related features, potentially compromising safety.
9. How can I prevent the C129E code from occurring?
Regular maintenance, such as inspecting and cleaning electrical connections and ensuring the brake system is in good condition, can help prevent this code.
10. Does the C129E code always require sensor replacement?
Not always; the issue could be caused by damaged wiring, loose connections, or ECM-related problems, which might only require repairs or adjustments.
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