Engine-Codes.com
Engine-Codes – Generic – C1229

C1229 Code - Rear Anti-Lock Brake Sensor

Quick Answer

The C1229 code indicates a problem with the rear anti-lock brake sensor in the vehicle. Common causes include Faulty rear anti-lock brake sensor, Damaged or corroded sensor wiring or connectors, Wheel speed sensor ring damage or contamination. 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
C1229 indicates Rear Anti-Lock Brake Sensor.
Common causes
Common causes include Faulty rear anti-lock brake sensor, Damaged or corroded sensor wiring or connectors, Wheel speed sensor ring damage or contamination.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code C1229 Description

The C1229 code indicates a problem with the rear anti-lock brake sensor in the vehicle. The anti-lock braking system (ABS) relies on sensors at each wheel to monitor the speed of the wheels and prevent them from locking up during braking, improving control and stability. The rear anti-lock brake sensor specifically measures the speed of the rear wheels, allowing the ABS system to adjust braking pressure accordingly.

OBDII Code C1229 - Rear Anti-Lock Brake Sensor
C1229 Code - Rear Anti-Lock Brake Sensor

Common Causes of C1229

  1. Faulty rear anti-lock brake sensor.
  2. Damaged or corroded sensor wiring or connectors.
  3. Wheel speed sensor ring damage or contamination.
  4. ABS module malfunction or communication issues.
  5. Electronic control unit (ECU) failure.

Symptoms of C1229

  1. Illumination of the ABS warning light on the dashboard.
  2. Increased stopping distance or reduced braking effectiveness.
  3. Pulsating brake pedal or unusual brake pedal feel.
  4. ABS system engaging when not needed, such as during normal braking.
  5. Traction control system may be affected, leading to loss of traction on slippery surfaces.

How to Fix C1229

  1. Diagnose the specific cause of the C1229 code using a scan tool to pinpoint the issue with the rear anti-lock brake sensor.
  2. Inspect the sensor, wiring, and connectors for damage or corrosion, repairing or replacing as needed.
  3. Check the wheel speed sensor ring for damage or debris, cleaning or replacing if necessary.
  4. Test the ABS system to ensure proper functionality and clear the code from the vehicle's computer.
  5. Reassemble any components and road test the vehicle to confirm that the issue has been resolved.

Cost to Fix C1229

The typical repair cost for addressing a rear anti-lock brake sensor issue can range from $100 to $300 for parts and labor. However, the actual cost may vary depending on the specific make and model of the vehicle, as well as the location and labor rates of the auto repair shop. It's recommended to obtain a detailed estimate from a qualified mechanic or repair facility before proceeding with the repair.

Need more information about the C1229 code?

Need more information on how to fix the C1229 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1229 code diagnosed by a professional: Find a repair shop in your area

Code C1229 Information for Specific Makes

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 C1229 Code

1. What are the common symptoms of OBDII code C1229 related to the Rear Anti-Lock Brake Sensor?

The common symptoms include the ABS warning light illuminated on the dashboard, poor brake performance, and possible traction control issues.

2. What could be the potential causes of OBDII code C1229 for the Rear Anti-Lock Brake Sensor?

Possible causes may include a faulty rear ABS sensor, damaged wiring or connectors, sensor alignment issues, or a malfunctioning ABS control module.

3. How can I diagnose the OBDII code C1229 for the Rear Anti-Lock Brake Sensor?

You can diagnose this code by using an OBDII scanner to retrieve the specific fault code, visually inspecting the rear ABS sensor and its wiring, conducting resistance tests on the sensor, and checking for any signs of physical damage.

4. What are some repair tips for addressing OBDII code C1229 associated with the Rear Anti-Lock Brake Sensor?

Repair tips may include cleaning the sensor and its mounting area, replacing a faulty sensor, repairing damaged wiring, ensuring proper sensor alignment, and resetting the ABS system after repairs.

5. Can driving with OBDII code C1229 related to the Rear Anti-Lock Brake Sensor pose any risks?

Continuing to drive with this code may compromise the vehicle's braking and traction control systems, potentially leading to unsafe driving conditions. It is advisable to address the issue promptly.

6. Is it possible to reset OBDII code C1229 for the Rear Anti-Lock Brake Sensor without fixing the underlying problem?

While you can clear the code temporarily, it will likely reappear until the root cause of the issue is addressed. Resetting the code without fixing the problem may lead to ongoing ABS malfunctions.

7. How critical is it to fix OBDII code C1229 pertaining to the Rear Anti-Lock Brake Sensor promptly?

It is crucial to address this code promptly as it directly affects the vehicle's ABS functionality, which is essential for safe braking and traction control. Delaying repairs can compromise driving safety.

8. Can weather conditions or road debris impact the Rear Anti-Lock Brake Sensor and trigger OBDII code C1229?

Yes, harsh weather conditions, road debris, or improper maintenance can affect the sensor's performance, leading to the triggering of OBDII code C1229 for the Rear Anti-Lock Brake Sensor.

9. Are there any DIY methods to troubleshoot OBDII code C1229 related to the Rear Anti-Lock Brake Sensor?

While basic inspections like checking for loose connections or visible damage can be done DIY, diagnosing and repairing complex issues related to the ABS system may require professional expertise and specialized tools.

10. How much can I expect to pay for repairing OBDII code C1229 concerning the Rear Anti-Lock Brake Sensor?

Repair costs can vary based on the specific issue, labor rates, and parts needed. It is advisable to consult a mechanic for an accurate diagnosis and cost estimate before proceeding with repairs.

Discuss the causes and fixes for C1229 OBDII Code

Submit a New Comment

Code C1229 comments

No comments found for this page.