AutoCodes – Buick – C029C Buick

C029C Buick Code - Brake Control Brake Pedal Position Sensor

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
C029C Buick indicates Brake Control Brake Pedal Position Sensor.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 897
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 18, 2020
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Code C029C Buick Description

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. The electronic brake control module monitors when the driver's foot is on the brake and locks the offset. The offset is locked when 3 out of the 4 inputs indicate the brake pedal is applied. The 4 inputs are brake pedal travel 1, brake pedal travel 2, master cylinder pressure sensor, and the brake pedal position sensor. These inputs are used to determine the driver's braking intent which is used to the control amount of pressure applied to the wheels.
OBDII Code C029C Buick - Brake Control Brake Pedal Position Sensor - AutoCodes.com
C029C Buick Code - Brake Control Brake Pedal Position Sensor

What are the Possible Causes of the DTC C029C Buick?

  • 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 C029C Buick?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C029C Buick 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.

Need more information about the C029C Buick code?

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C029C Buick Code

1. What are the common symptoms of OBDII code C029C in a Buick related to the Brake Pedal Position Sensor?

- Common symptoms include erratic brake pedal behavior, issues with cruise control, traction control problems, and potential ABS system malfunctions.

2. What can cause OBDII code C029C related to the Brake Pedal Position Sensor in a Buick?

- The code can be triggered by a faulty brake pedal position sensor, damaged wiring or connectors, or issues with the brake control module.

3. How can I diagnose the cause of OBDII code C029C in my Buick?

- Diagnosis typically involves checking the brake pedal position sensor for proper operation, inspecting wiring for damage, and using a scan tool to communicate with the brake control module.

4. Can I drive my Buick with OBDII code C029C present?

- It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of critical safety systems like the ABS and traction control.

5. What are the repair options for OBDII code C029C in a Buick?

- Repair options may include replacing the brake pedal position sensor, repairing damaged wiring or connectors, or reprogramming the brake control module as needed.

6. How much does it cost to fix OBDII code C029C related to the Brake Pedal Position Sensor in a Buick?

- The cost of repair can vary depending on the specific issue, but it is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

7. Can I reset OBDII code C029C in my Buick using a scan tool?

- Resetting the code may temporarily turn off the warning light, but it is crucial to address the underlying issue causing the code to prevent further problems.

8. How can I prevent OBDII code C029C from occurring in my Buick in the future?

- Regular maintenance and inspections of the brake system, including the brake pedal position sensor, can help prevent issues that trigger this code.

9. Is OBDII code C029C related to the Brake Pedal Position Sensor a common problem in Buick vehicles?

- While not extremely common, issues with the brake pedal position sensor can occur in Buick vehicles and may trigger this specific OBDII code.

10. Can a DIY enthusiast repair OBDII code C029C in a Buick or should I seek professional help?

- Depending on your skill level and access to tools, some simple repairs like sensor replacement or wiring checks may be possible, but complex issues may require professional assistance.

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