C129D GMC Code - Brake Pedal Position Sensor 4 Circuit Low 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
- C129D GMC indicates Brake Pedal Position Sensor 4 Circuit Low 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 C129D GMC Description
What are the Possible Causes of the DTC C129D GMC?
- 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 C129D GMC?
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 C129D GMC 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 C129D GMC Code
1. What are the common symptoms of OBDII code C129D (GMC) related to the Brake Pedal Position Sensor 4 Circuit Low Input?
- Common symptoms include issues with the brake lights, cruise control not working, and potential problems with the vehicle's stability control system.
2. What are the possible causes of OBDII code C129D (GMC) indicating a Brake Pedal Position Sensor 4 Circuit Low Input?
- The code may be triggered by a faulty brake pedal position sensor, damaged wiring or connectors, or a problem with the vehicle's electronic control module (ECM).
3. How can I diagnose the cause of OBDII code C129D (GMC) for the Brake Pedal Position Sensor 4 Circuit Low Input?
- Diagnosing this code typically involves checking the brake pedal position sensor's wiring, connectors, and sensor itself for any signs of damage or malfunction using a diagnostic scan tool.
4. Can I continue driving my vehicle with OBDII code C129D (GMC) related to the Brake Pedal Position Sensor 4 Circuit Low Input?
- It is not recommended to drive the vehicle with this code present, as it may affect the proper functioning of crucial safety systems like the brakes and stability control.
5. How can I repair OBDII code C129D (GMC) for the Brake Pedal Position Sensor 4 Circuit Low Input?
- Repairing this code often involves replacing the faulty brake pedal position sensor, repairing any damaged wiring or connectors, and clearing the code with a diagnostic tool.
6. Are there any DIY tips for fixing OBDII code C129D (GMC) related to the Brake Pedal Position Sensor 4 Circuit Low Input?
- While some basic troubleshooting like checking the sensor's wiring connections can be done by DIY enthusiasts, it is recommended to have a professional mechanic diagnose and repair this issue.
7. How much does it cost to repair OBDII code C129D (GMC) indicating a Brake Pedal Position Sensor 4 Circuit Low Input?
- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.
8. Will resetting the OBDII code C129D (GMC) related to the Brake Pedal Position Sensor 4 Circuit Low Input make it go away permanently?
- Resetting the code may temporarily clear it, but if the underlying issue causing the code is not fixed, it is likely to reappear after some time.
9. Can a malfunctioning Brake Pedal Position Sensor cause other problems in the vehicle?
- Yes, a faulty brake pedal position sensor can affect the proper operation of the vehicle's brake lights, cruise control, and stability control systems.
10. How long does it typically take to repair OBDII code C129D (GMC) for the Brake Pedal Position Sensor 4 Circuit Low Input?
- The repair time can vary depending on the extent of the issue and the availability of parts, but it may take anywhere from 1 to 3 hours for a professional mechanic to diagnose and fix the problem.
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