B0959 Code - Parking Assist Rear Sensor Left Middle Circuit
Quick Answer
The B0959 diagnostic trouble code (DTC) indicates a problem with the parking assist rear sensor located on the left side in the middle of the vehicle. Common causes include Faulty sensor: The most common cause of this code is a malfunctioning rear sensor, This could be due to damage, wear and tear, or electrical issues, Wiring issues: Problems with the wiring connecting the sensor to the vehicle's electrical system can also trigger this code. 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 indicates Parking Assist Rear Sensor Left Middle Circuit.
- Common causes
- Common causes include Faulty sensor: The most common cause of this code is a malfunctioning rear sensor, This could be due to damage, wear and tear, or electrical issues, Wiring issues: Problems with the wiring connecting the sensor to the vehicle's electrical system can also trigger this code.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code B0959 Description
The B0959 diagnostic trouble code (DTC) indicates a problem with the parking assist rear sensor located on the left side in the middle of the vehicle. This sensor is responsible for detecting objects behind the vehicle when parking or maneuvering in tight spaces. When this sensor circuit malfunctions, it can lead to inaccurate readings or a complete failure of the parking assist system.
Common Causes of B0959
- Faulty sensor: The most common cause of this code is a malfunctioning rear sensor. This could be due to damage, wear and tear, or electrical issues.
- Wiring issues: Problems with the wiring connecting the sensor to the vehicle's electrical system can also trigger this code. This could include shorts, breaks, or corrosion in the wiring.
- Water damage: If water enters the sensor or its wiring, it can cause a short circuit or damage to the components, leading to this code.
- Sensor misalignment: Physical damage or misalignment of the sensor can prevent it from accurately detecting objects behind the vehicle.
- Electronic control unit (ECU) failure: In rare cases, a failure in the ECU responsible for processing sensor data could be the cause of this issue.
Symptoms of B0959
- Parking assist system not functioning: The most common symptom of this issue is the parking assist system not working properly or not working at all. The driver may not receive any alerts or warnings when backing up.
- False alarms: Another symptom is the system giving false alarms, indicating that there is an obstacle when there isn't one.
- Inaccurate distance readings: The system may provide inaccurate distance readings, making it challenging for the driver to judge the proximity of objects behind the vehicle.
- Warning light: The vehicle's dashboard may display a warning light related to the parking assist system, indicating a problem that needs attention.
How to Fix B0959
- Diagnostic scan: Begin by using a diagnostic scanner to retrieve the specific trouble code and pinpoint the exact location of the issue.
- Visual inspection: Inspect the rear sensor, wiring, and connections for any visible damage, corrosion, or loose connections.
- Replace sensor: If the sensor is found to be faulty, it will need to be replaced with a new one. Ensure proper alignment during installation.
- Repair wiring: Address any wiring issues by repairing or replacing damaged wires and ensuring proper connections.
- Clear codes: After completing the repair, clear the trouble codes from the vehicle's system and test the parking assist system to ensure it is functioning correctly.
Cost to Fix B0959
The cost of repairing a parking assist rear sensor left middle circuit issue can vary depending on the make and model of the vehicle, the location of the sensor, and the extent of the damage. In general, the cost of a new sensor can range from $50 to $200, with additional costs for labor and diagnostic fees. The total repair cost, including parts and labor, could range from $150 to $400. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
Tech Notes for B0959
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
Need more information about the B0959 code?
Need more information on how to fix the B0959 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B0959 code diagnosed by a professional: Find a repair shop in your area
Code B0959 Information for Specific Makes
- B0959 Buick — Parking Assist Rear Sensor Left Middle Circuit
- B0959 Cadillac — Parking Assist Rear Sensor Left Middle Circuit
- B0959 Chevrolet — Parking Assist Rear Sensor Left Middle Circuit
- B0959 GMC — Parking Assist Rear Sensor Left Middle Circuit
- B0959 Pontiac — Parking Assist Rear Sensor Left Middle Circuit
- B0959 Saturn — Parking Assist Rear Sensor Left Middle Circuit
Frequently Asked Questions about B0959 Code
1. What does OBDII code B0959 mean?
Code B0959 indicates an issue with the Parking Assist Rear Sensor Left Middle Circuit, typically related to a malfunction in the sensor, wiring, or control module.
2. What are the common symptoms of B0959?
Symptoms may include the parking assist system not working, a warning light on the dashboard, or inaccurate distance readings from the rear parking sensors.
3. What causes the B0959 code?
Common causes include a faulty parking sensor, damaged wiring or connectors, corrosion, or a malfunction in the control module.
4. How is the B0959 code diagnosed?
A technician will typically use a scan tool to confirm the code, perform a visual inspection of the sensor and wiring, and test the circuit for continuity or shorts.
5. Can I drive my car with the B0959 code?
Yes, but the parking assist system may not function properly, increasing the risk of minor collisions when reversing.
6. How do I fix the B0959 code?
Repairs may include replacing the faulty parking sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the control module if necessary.
7. How much does it cost to repair the B0959 code?
Repair costs can range from $100 to $300, depending on whether the sensor, wiring, or module needs replacement.
8. Can I reset the B0959 code without fixing the problem?
Clearing the code without addressing the root cause will likely result in the code returning and the parking assist system malfunctioning again.
9. How can I prevent the B0959 code from occurring?
Regularly inspect and clean the parking sensors and connectors to prevent dirt, corrosion, or physical damage that could trigger the code.
10. Is the B0959 code specific to certain car models?
While it is a generic OBDII code, its exact symptoms and repair procedures may vary depending on the make and model of your vehicle.
Discuss the causes and fixes for B0959 OBDII Code
Code B0959 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.