C129C Code - Brake Pedal Position Sensor 3 Circuit Calibration
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
- C129C indicates Brake Pedal Position Sensor 3 Circuit Calibration.
- 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 C129C Description
What are the Possible Causes of the DTC C129C?
- 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 C129C?
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 C129C 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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Information for Specific Makes
- C129C Buick — Brake Pedal Position Sensor 3 Circuit Calibration
- C129C Cadillac — Brake Pedal Position Sensor 3 Circuit Calibration
- C129C Chevrolet — Brake Pedal Position Sensor 3 Circuit Calibration
- C129C GMC — Brake Pedal Position Sensor 3 Circuit Calibration
Frequently Asked Questions about C129C Code
1. What are the common symptoms of OBDII code C129C (Brake Pedal Position Sensor 3 Circuit Calibration)?
- The common symptoms include the brake pedal feeling spongy or unresponsive, the brake lights staying on constantly, and potential issues with the vehicle's stability control system.
2. What are the possible causes of OBDII code C129C?
- The code C129C can be triggered by a faulty brake pedal position sensor, a malfunction in the sensor calibration, wiring issues in the brake pedal circuit, or problems with the vehicle's electronic stability control system.
3. How can I diagnose the cause of OBDII code C129C?
- Diagnosing the cause of code C129C typically involves checking the brake pedal position sensor's calibration, inspecting the sensor and its wiring for damage, and using a diagnostic scanner to gather data from the sensor.
4. Can I drive my vehicle with OBDII code C129C?
- It's not recommended to drive your vehicle with code C129C present, as it can affect the proper functioning of the brake system and the vehicle's stability control. It's best to address the issue promptly.
5. How can I repair OBDII code C129C?
- Repairing code C129C may involve recalibrating the brake pedal position sensor, replacing a faulty sensor, repairing damaged wiring, or resetting the stability control system. It's advisable to consult a professional mechanic for an accurate diagnosis and repair.
6. Will OBDII code C129C cause my vehicle to fail an emissions test?
- While code C129C is not directly related to emissions, it indicates a potential issue with the brake system that can affect the vehicle's safety and performance. It's essential to address the problem to ensure your vehicle is operating correctly.
7. How much does it typically cost to repair OBDII code C129C?
- The cost of repairing code C129C can vary depending on the underlying cause of the issue, the labor rates in your area, and the cost of parts needed for the repair. It's recommended to obtain quotes from different mechanics for an accurate estimate.
8. Can I reset OBDII code C129C without fixing the underlying issue?
- While you can clear the code using a diagnostic scanner, it's crucial to address the root cause of code C129C to prevent further problems with the brake system and the vehicle's stability control. Simply resetting the code without fixing the issue may lead to recurring problems.
9. How often does OBDII code C129C occur in vehicles?
- Code C129C related to the Brake Pedal Position Sensor 3 Circuit Calibration is not as common as some other OBDII codes, but it can still occur in vehicles with electronic stability control systems and brake pedal position sensors.
10. Is OBDII code C129C a serious issue that requires immediate attention?
- Yes, code C129C is a serious issue that affects the proper functioning of the brake system and the vehicle's stability control. Immediate attention and repair are recommended to ensure safe operation of the vehicle.
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