AutoCodes – GMC – B0959 2015 GMC Sierra

B0959 2015 GMC Sierra Code - Parking Assist Rear Sensor Left Middle Circuit

Quick Answer

The parking assist sensors are 3-wire ultrasonic sensors that are used to determine the distance between the vehicle and an object. Common causes include Faulty Parking Assist Rear Sensor Left Middle, Parking Assist Rear Sensor Left Middle harness is open or shorted, Parking Assist Rear Sensor Left Middle circuit poor electrical connection. 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 2015 GMC Sierra indicates Parking Assist Rear Sensor Left Middle Circuit.
Common causes: Common causes include Faulty Parking Assist Rear Sensor Left Middle, Parking Assist Rear Sensor Left Middle harness is open or shorted, Parking Assist Rear Sensor Left Middle circuit poor electrical connection.
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.

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Code Popularity 275

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 02, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0959 2015 GMC Sierra Description

The parking assist sensors are 3-wire ultrasonic sensors that are used to determine the distance between the vehicle and an object. The Parking Assist Control Module supplies 12 V to the parking assist sensors via the 12 V reference circuit and provides ground via the low reference circuit. The Parking Assist Control Module triggers the sensors in a sequential loop. After each sensor transmits, the Parking Assist Control Module uses the sensor echo received through the signal circuit to calculate the distance and position of an object. The Diagnostic Trouble Code (DTC) will be set when the Parking Aid Rear Sensor signal to the Parking Assist Control Module is out of specification.

OBDII Code B0959 2015 GMC Sierra - Parking Assist Rear Sensor Left Middle Circuit - AutoCodes.com — B0959 2015 GMC Sierra Code - Parking Assist Rear Sensor Left Middle Circuit

What does this mean?

What are the Possible Causes of the DTC B0959 2015 GMC Sierra?

Faulty Parking Assist Rear Sensor Left Middle
Parking Assist Rear Sensor Left Middle harness is open or shorted
Parking Assist Rear Sensor Left Middle circuit poor electrical connection
Faulty Parking Assist Control Module

How to Fix the DTC B0959 2015 GMC Sierra?

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 does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0959 2015 GMC Sierra 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.

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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 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B0959 in a 2015 GMC Sierra related to the Parking Assist Rear Sensor Left Middle Circuit?

- The common symptoms include malfunction or complete failure of the rear parking assist system, specifically the sensor located on the left middle side of the vehicle.

2. What are the possible causes of OBDII code B0959 in a 2015 GMC Sierra?

- The code B0959 typically indicates a fault in the wiring, connections, or the sensor itself of the left middle rear parking assist sensor circuit.

3. How can I diagnose the issue related to OBDII code B0959 in my 2015 GMC Sierra?

- Diagnosis involves checking the wiring harness, connectors, and sensor for any visible damage, corrosion, or loose connections. A multimeter can also be used to test the sensor's functionality.

4. Can I repair the OBDII code B0959 issue in my 2015 GMC Sierra myself?

- Depending on your automotive repair skills, you may be able to repair the issue yourself by fixing any damaged wiring, connectors, or replacing the faulty sensor. However, professional assistance may be needed for complex electrical diagnostics.

5. Is it safe to drive my 2015 GMC Sierra with the OBDII code B0959 related to the Parking Assist Rear Sensor Left Middle Circuit?

- While the vehicle should still be safe to drive, it is recommended to address the issue promptly to ensure the proper functioning of the parking assist system, which can help prevent accidents while parking.

6. Can weather conditions affect the occurrence of OBDII code B0959 in a 2015 GMC Sierra?

- Extreme weather conditions such as heavy rain, snow, or extreme temperatures can potentially damage the wiring or sensor, leading to the triggering of the B0959 trouble code.

7. How much does it typically cost to repair OBDII code B0959 in a 2015 GMC Sierra at a professional auto repair shop?

- The cost of repair can vary depending on the extent of the damage and the labor rates of the repair shop. On average, repairing the Parking Assist Rear Sensor Left Middle Circuit issue can cost a few hundred dollars.

8. Will resetting the OBDII code B0959 in my 2015 GMC Sierra make the issue go away permanently?

- Resetting the code may temporarily remove the warning light, but if the underlying issue with the sensor circuit is not fixed, the code is likely to return. It is important to diagnose and repair the root cause of the problem.

9. Can a faulty OBDII code B0959 affect other systems in my 2015 GMC Sierra?

- While the B0959 code specifically relates to the Parking Assist Rear Sensor Left Middle Circuit, a faulty sensor or wiring issue could potentially impact the overall performance of the rear parking assist system in the vehicle.

10. Are there any preventive measures I can take to avoid encountering OBDII code B0959 in my 2015 GMC Sierra?

- Regularly inspecting the parking assist sensors, keeping them clean, and addressing any visible wiring issues promptly can help prevent the occurrence of the B0959 trouble code in your GMC Sierra.