AutoCodes – Generic – B2629

B2629 Code - Left Rear Sensor Failure

Quick Answer

The Parking and Back-Up Sensor Control Unit monitors the Left Rear Sensor. Common causes include Faulty Left Rear Sensor, Left Rear Sensor harness is open or shorted, Left Rear 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: B2629 indicates Left Rear Sensor Failure.
Common causes: Common causes include Faulty Left Rear Sensor, Left Rear Sensor harness is open or shorted, Left Rear 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.

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Code Popularity 1,481

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 09, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2629 Description

The Parking and Back-Up Sensor Control Unit monitors the Left Rear Sensor. The Parking and Back-Up Sensor Control Unit sets the Diagnostic Trouble Code (DTC) when there is a Left Rear Sensor failure.

OBDII Code B2629 - Left Rear Sensor Failure - AutoCodes.com — B2629 Code - Left Rear Sensor Failure

What does this mean?

What are the Possible Causes of the DTC B2629?

Faulty Left Rear Sensor
Left Rear Sensor harness is open or shorted
Left Rear Sensor circuit poor electrical connection
Faulty Parking and Back-Up Sensor Control Unit

How to Fix the DTC B2629?

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 B2629 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 B2629 code?

Need more information on how to fix the B2629 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2629 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2629 Acura — Left Rear Sensor Failure
B2629 Honda — Left Rear Sensor Failure

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 B2629 Code

1. What are the common symptoms of OBDII code B2629 (Left Rear Sensor Failure)?

- The common symptoms include issues with the vehicle's stability control system, traction control system, or anti-lock braking system, and may trigger warning lights on the dashboard.

2. What usually causes OBDII code B2629 to appear?

- The code B2629 is typically triggered by a malfunction in the left rear wheel speed sensor, which can be caused by sensor wiring issues, sensor damage, or sensor placement problems.

3. How can I diagnose the cause of OBDII code B2629?

- Diagnosing the cause of B2629 involves checking the wiring and connection of the left rear wheel speed sensor, inspecting the sensor for physical damage, and testing the sensor's functionality using a diagnostic tool.

4. Can I drive my vehicle with OBDII code B2629 present?

- It is not recommended to drive the vehicle with code B2629 present, as it may affect the operation of crucial safety systems like ABS and stability control.

5. How can I repair OBDII code B2629 (Left Rear Sensor Failure)?

- Repairing code B2629 involves fixing or replacing the left rear wheel speed sensor, addressing any wiring issues, and clearing the code using a diagnostic tool.

6. Will resetting the OBDII code B2629 make it go away permanently?

- Resetting the code may temporarily clear the warning lights, but if the underlying issue causing the code is not fixed, it is likely to reappear.

7. Is it possible to prevent OBDII code B2629 from occurring in the future?

- Regular maintenance, including checking the condition of wheel speed sensors and their wiring, can help prevent code B2629 from occurring in the future.

8. Can a DIY enthusiast fix OBDII code B2629 at home?

- While diagnosing and repairing code B2629 may be possible for experienced DIY enthusiasts with the right tools, seeking professional help is recommended for accurate diagnosis and proper repair.

9. How long does it typically take to repair OBDII code B2629?

- The repair time for code B2629 can vary depending on the exact cause of the issue, but it may take anywhere from 1 to 3 hours to diagnose and fix the problem.

10. Are there any safety risks associated with ignoring OBDII code B2629?

- Ignoring code B2629 can pose safety risks due to potential malfunctions in critical safety systems like ABS and traction control, compromising the vehicle's stability and braking performance.