Engine-CodesGeneric – B0958:3B

B0958:3B Code - Parking Assist Rear Sensor Left Corner Circuit Self-Test Malfunction

Quick Answer

The B0958:3B diagnostic trouble code (DTC) specifically refers to a Parking Assist Rear Sensor Left Corner Circuit Self-Test Malfunction. Common causes include Failed rear left corner sensor, Damaged or corroded wiring harness connecting the sensor to the vehicle's computer, Short circuit in the wiring harness. 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
B0958:3B indicates Parking Assist Rear Sensor Left Corner Circuit Self-Test Malfunction.
Common causes
Common causes include Failed rear left corner sensor, Damaged or corroded wiring harness connecting the sensor to the vehicle's computer, Short circuit in the wiring harness.
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 18, 2024
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Code B0958:3B Description

The B0958:3B diagnostic trouble code (DTC) specifically refers to a Parking Assist Rear Sensor Left Corner Circuit Self-Test Malfunction. This code indicates that there is an issue with the self-test function of the rear left corner sensor in the vehicle's parking assist system. The parking assist system is designed to help drivers maneuver their vehicle into tight parking spaces by providing audible or visual alerts when objects are detected near the vehicle. When this sensor malfunctions, it can lead to inaccurate readings or a complete failure of the parking assist system.

OBDII Code B0958:3B - Parking Assist Rear Sensor Left Corner Circuit Self-Test Malfunction
B0958:3B Code - Parking Assist Rear Sensor Left Corner Circuit Self-Test Malfunction

Common Causes of B0958:3B

  1. Failed rear left corner sensor.
  2. Damaged or corroded wiring harness connecting the sensor to the vehicle's computer.
  3. Short circuit in the wiring harness.
  4. Malfunctioning computer module responsible for processing sensor data.

Symptoms of B0958:3B

  1. Parking assist system not providing accurate warnings or alerts.
  2. Inconsistent or intermittent operation of the parking assist system.
  3. Error message or warning light related to the parking assist system on the dashboard.
  4. Difficulty maneuvering the vehicle in tight parking spaces due to lack of sensor assistance.

How to Fix B0958:3B

  1. Begin by diagnosing the specific cause of the malfunction using a diagnostic scanner to retrieve the DTC and pinpoint the issue.
  2. Inspect the rear left corner sensor for any physical damage or signs of failure. Replace the sensor if necessary.
  3. Check the wiring harness for any damage, corrosion, or poor connections. Repair or replace the wiring as needed.
  4. Test the computer module to ensure it is functioning correctly. Replace the module if it is found to be faulty.
  5. Clear the DTC from the vehicle's computer memory and test the parking assist system to verify proper operation.

Cost to Fix B0958:3B

The typical repair costs for addressing a Parking Assist Rear Sensor Left Corner Circuit Self-Test Malfunction can vary depending on the specific cause of the issue and the labor rates in your area. In general, replacing a sensor or repairing wiring harnesses can range from $200 to $500, while replacing a computer module may cost between $300 and $800. Keep in mind that these are rough estimates, and the actual costs may differ based on the make and model of your vehicle, as well as the rates charged by auto repair shops in your location. It is advisable to contact local shops for more precise pricing information. Additionally, diagnostic time and labor rates at auto repair shops can vary, with rates typically ranging from $80 to $150 per hour.

Tech Notes for B0958:3B

B0958:01 Parking Assist Rear Sensor Left Corner Circuit Short to Battery

B0958:02 Parking Assist Rear Sensor Left Corner Circuit Short to Ground

B0958:04 Parking Assist Rear Sensor Left Corner Circuit Open

B0958:06 Parking Assist Rear Sensor Left Corner Circuit Low Voltage/Open

B0958:08 Parking Assist Rear Sensor Left Corner Circuit Performance - Signal Invalid

B0958:18 Parking Assist Rear Sensor Left Corner Circuit Low Signal Amplitude

B0958:21 Parking Assist Rear Sensor Left Corner Circuit Incorrect Period

B0958:22 Parking Assist Rear Sensor Left Corner Circuit Too Short Low-Time

B0958:3A Parking Assist Rear Sensor Left Corner Circuit Incorrect Component Installed

B0958:3B Parking Assist Rear Sensor Left Corner 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 B0958:3B Code

1. What does OBDII code B0958:3B mean?

Code B0958:3B indicates a self-test malfunction in the circuit for the parking assist rear sensor located at the left corner of the vehicle.

2. What are the common symptoms of code B0958:3B?

Common symptoms include the parking assist system not functioning, warning lights or messages on the dashboard, and lack of audible beeps when reversing near obstacles.

3. What causes code B0958:3B to be triggered?

This code can be caused by damaged wiring, a faulty left corner parking sensor, poor electrical connections, or a malfunction in the parking assist module.

4. Can I still drive my vehicle with code B0958:3B?

Yes, the vehicle can still be driven, but the parking assist system may not function properly, increasing the risk of collisions when reversing.

5. How do I diagnose code B0958:3B?

Diagnose this code by inspecting the left rear corner sensor, checking the wiring and connectors for damage, and using a diagnostic scan tool to test the parking assist system.

6. How do I fix code B0958:3B?

Repairs may include replacing the faulty left corner parking sensor, repairing damaged wiring, cleaning corroded connectors, or reprogramming the parking assist module.

7. How much does it cost to fix code B0958:3B?

Repair costs vary but typically range from $100 to $300, depending on whether the sensor, wiring, or module needs replacement or repair.

8. Can a dirty sensor cause code B0958:3B?

Yes, dirt, debris, or moisture on the left corner parking sensor can interfere with its operation and trigger this code.

9. Do I need to replace the parking sensor to fix code B0958:3B?

Not always. First, try cleaning the sensor and checking the wiring. If the issue persists, the sensor may need replacement.

10. Is code B0958:3B related to other parking assist codes?

Yes, it may occur alongside other parking assist codes if there are multiple sensor or system-wide issues in the parking assist system.

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