Engine-CodesBuick – B0959 Buick

B0959 Buick Code - Parking Assist Rear Sensor Left Middle Circuit

Quick Answer

The B0959 Buick code refers to an issue with the Parking Assist Rear Sensor Left Middle Circuit. Common causes include Damaged wiring leading to the rear parking sensor, Faulty rear parking sensor on the left side of the vehicle, Issues with the vehicle's computer system. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
B0959 Buick indicates Parking Assist Rear Sensor Left Middle Circuit.
Common causes
Common causes include Damaged wiring leading to the rear parking sensor, Faulty rear parking sensor on the left side of the vehicle, Issues with the vehicle's computer system.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code B0959 Buick Description

The B0959 Buick code refers to an issue with the Parking Assist Rear Sensor Left Middle Circuit. This code indicates that there is a malfunction in the circuit that is responsible for the operation of the rear parking sensor located on the left side of the vehicle. The parking assist system uses sensors to detect objects in the vehicle's path while parking, providing audible alerts to the driver to prevent collisions.

OBDII Code B0959 Buick - Parking Assist Rear Sensor Left Middle Circuit
B0959 Buick Code - Parking Assist Rear Sensor Left Middle Circuit

Common Causes of B0959 Buick

  1. Damaged wiring leading to the rear parking sensor.
  2. Faulty rear parking sensor on the left side of the vehicle.
  3. Issues with the vehicle's computer system.
  4. Corrosion or debris affecting the sensor's functionality.
  5. Impact or damage to the rear sensor.

Symptoms of B0959 Buick

  1. Parking assist system not providing accurate distance alerts.
  2. Warning light on the dashboard related to the parking assist system.
  3. Inability to activate the parking assist system.
  4. Audible alerts from the parking assist system not functioning.

How to Fix B0959 Buick

  1. Begin by visually inspecting the wiring connected to the rear parking sensor for any signs of damage or corrosion.
  2. Test the rear parking sensor on the left side of the vehicle to determine if it is functioning properly.
  3. Check the vehicle's computer system for any error codes related to the parking assist system.
  4. Replace the rear parking sensor if it is found to be faulty.
  5. Clear the diagnostic trouble codes and test the parking assist system to ensure proper functionality.

Cost to Fix B0959 Buick

The typical repair costs for addressing the B0959 Buick code can vary depending on the specific cause of the issue. In general, replacing a rear parking sensor can cost between $100 and $300, while addressing wiring issues or computer system faults may increase the overall repair cost. Additionally, labor costs at auto repair shops can range from $80 to $150 per hour, so the total cost of the repair can vary based on the shop's rates and the time required to diagnose and fix the issue. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate for resolving this problem.

Tech Notes for B0959 Buick

B0959:01 Parking Assist Rear Sensor Left Middle Circuit Short to Battery

B0959:02 Parking Assist Rear Sensor Left Middle Circuit Short to Ground

B0959:04 Parking Assist Rear Sensor Left Middle Circuit Open

B0959:06 Parking Assist Rear Sensor Left Middle Circuit Low Voltage/Open

B0959:08 Parking Assist Rear Sensor Left Middle Circuit Performance - Signal Invalid

B0959:18 Parking Assist Rear Sensor Left Middle Circuit Low Signal Amplitude

B0959:21 Parking Assist Rear Sensor Left Middle Circuit Incorrect Period

B0959:22 Parking Assist Rear Sensor Left Middle Circuit Too Short Low-Time

B0959:3A Parking Assist Rear Sensor Left Middle Circuit Incorrect Component Installed

B0959:3B Parking Assist Rear Sensor Left Middle Circuit Self-Test Malfunction

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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 B0959 Buick Code

1. What does the OBDII code B0959 mean for a Buick?

Code B0959 indicates a problem with the Parking Assist Rear Sensor Left Middle Circuit, typically related to a malfunction or communication issue with the sensor.

2. What are the common symptoms of a B0959 code in a Buick?

Common symptoms include the parking assist system not functioning properly, warning lights or alerts for the parking assist system, and difficulty detecting objects behind the vehicle.

3. What causes the B0959 code to appear?

Causes can include a faulty rear parking sensor, damaged wiring or connectors, corrosion in the circuit, or a problem with the parking assist control module.

4. Can I still drive my Buick with a B0959 code?

Yes, you can drive the vehicle, but the parking assist system may not function correctly, increasing the risk of backing into objects.

5. How do I diagnose the B0959 code in a Buick?

Diagnosis involves inspecting the affected sensor, checking for loose or damaged wiring, and using a scan tool to confirm the fault and test the parking assist system.

6. How can I fix the B0959 code on a Buick?

Repairs may include replacing the faulty sensor, repairing damaged wiring, cleaning corroded connections, or, in rare cases, replacing the parking assist control module.

7. How much does it cost to repair a B0959 code?

Repair costs vary, but replacing a parking sensor typically ranges from $100 to $300, depending on parts and labor.

8. Can a dirty sensor cause the B0959 code in a Buick?

Yes, dirt, debris, or moisture on the sensor can interfere with its operation and trigger the code. Cleaning the sensor may resolve the issue.

9. Do I need special tools to fix the B0959 code?

Basic tools like a multimeter and a scan tool are often sufficient for diagnosing and repairing this code. Specialized tools may be needed for sensor replacement.

10. Can the B0959 code be cleared without repairs?

Clearing the code without addressing the underlying issue may temporarily remove it, but the problem will likely return until properly fixed.

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