Engine-CodesGMC – B0956 2016 GMC Sierra

B0956 2016 GMC Sierra Code - Parking Assist Front Sensor Right Middle Circuit

Quick Answer

The B0956 diagnostic trouble code (DTC) for a 2016 GMC Sierra specifically refers to an issue with the Parking Assist Front Sensor Right Middle Circuit. Common causes include Faulty front right middle parking sensor, Damaged or corroded wiring in the sensor circuit, Loose or disconnected connector to the sensor. 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
B0956 2016 GMC Sierra indicates Parking Assist Front Sensor Right Middle Circuit.
Common causes
Common causes include Faulty front right middle parking sensor, Damaged or corroded wiring in the sensor circuit, Loose or disconnected connector to the sensor.
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 B0956 2016 GMC Sierra Description

The B0956 diagnostic trouble code (DTC) for a 2016 GMC Sierra specifically refers to an issue with the Parking Assist Front Sensor Right Middle Circuit. This code indicates that there is a malfunction in the circuitry of the front right middle parking sensor, which is responsible for detecting obstacles in front of the vehicle during parking maneuvers. The parking assist system uses ultrasonic sensors located on the front and rear bumpers to alert the driver of nearby objects through audible alerts and visual displays on the dashboard.

OBDII Code B0956 2016 GMC Sierra - Parking Assist Front Sensor Right Middle Circuit
B0956 2016 GMC Sierra Code - Parking Assist Front Sensor Right Middle Circuit

Common Causes of B0956 2016 GMC Sierra

  1. Faulty front right middle parking sensor.
  2. Damaged or corroded wiring in the sensor circuit.
  3. Loose or disconnected connector to the sensor.
  4. Malfunctioning control module for the parking assist system.

Symptoms of B0956 2016 GMC Sierra

  1. Parking assist system not providing alerts when approaching obstacles.
  2. Inaccurate or inconsistent parking assist alerts.
  3. Parking assist system error message on the dashboard.
  4. Difficulty parking in tight spaces due to lack of sensor feedback.

How to Fix B0956 2016 GMC Sierra

  1. Begin by visually inspecting the front right middle parking sensor for any physical damage or debris that may be obstructing its operation.
  2. Check the wiring harness connected to the sensor for any signs of damage, wear, or corrosion. Repair or replace any damaged wiring.
  3. Inspect the connector for the sensor to ensure it is securely connected and free of corrosion. Clean or replace the connector if necessary.
  4. If the sensor, wiring, and connector are all in good condition, the issue may lie with the control module. Have the control module diagnosed and replaced if needed.
  5. Clear the DTC from the vehicle's computer system using a diagnostic scan tool to reset the parking assist system.

Cost to Fix B0956 2016 GMC Sierra

The typical repair costs for addressing a B0956 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty parking sensor can cost between $100 to $200, while repairing damaged wiring or connectors may range from $50 to $150. If the control module needs to be replaced, the cost can be higher, potentially ranging from $200 to $500 or more. Labor costs at auto repair shops typically range from $80 to $150 per hour, but rates can vary based on location and shop rates. It's advisable to consult with a professional mechanic to get an accurate estimate for the repair.

Tech Notes for B0956 2016 GMC Sierra

B0956:01 Parking Assist Front Sensor Right Middle Circuit Short to Battery

B0956:02 Parking Assist Front Sensor Right Middle Circuit Short to Ground

B0956:04 Parking Assist Front Sensor Right Middle Circuit Open

B0956:06 Parking Assist Front Sensor Right Middle Circuit Low Voltage/Open

B0956:08 Parking Assist Front Sensor Right Middle Circuit Performance - Signal Invalid

B0956:18 Parking Assist Front Sensor Right Middle Circuit Low Signal Amplitude

B0956:21 Parking Assist Front Sensor Right Middle Circuit Incorrect Period

B0956:22 Parking Assist Front Sensor Right Middle Circuit Too Short Low-Time

B0956:3A Parking Assist Front Sensor Right Middle Circuit Incorrect Component Installed

B0956:3B Parking Assist Front Sensor Right 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 B0956 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code B0956 on a 2016 GMC Sierra related to the Parking Assist Front Sensor Right Middle Circuit?

- Common symptoms include a malfunction or complete failure of the front parking assist system on the right middle side of the vehicle.

2. What are the potential causes of OBDII code B0956 on a 2016 GMC Sierra?

- The code B0956 can be triggered by issues such as a faulty front parking sensor, damaged wiring or connectors, or a problem with the control module.

3. How can I diagnose the Parking Assist Front Sensor Right Middle Circuit issue on my 2016 GMC Sierra?

- To diagnose the issue, you can use an OBDII scanner to retrieve the specific trouble code B0956. Additionally, visually inspect the front parking sensor, wiring, and connectors for any visible damage.

4. What are some repair tips for resolving OBDII code B0956 on a 2016 GMC Sierra?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the faulty front parking sensor, or resetting the control module after the issue has been fixed.

5. Can I fix the Parking Assist Front Sensor Right Middle Circuit problem on a 2016 GMC Sierra myself?

- Depending on your experience and comfort level with automotive repairs, you may be able to fix the issue yourself by following repair manuals or online guides specific to your GMC Sierra model.

6. Will OBDII code B0956 on a 2016 GMC Sierra cause any safety concerns?

- While the code itself may not directly affect the vehicle's drivability, a malfunctioning parking assist system could compromise your ability to accurately judge distances while parking.

7. How urgent is it to address OBDII code B0956 on a 2016 GMC Sierra?

- It is recommended to address the issue promptly to ensure the proper functioning of the front parking assist system and to prevent any potential accidents or damage while parking.

8. Is it necessary to clear the OBDII code B0956 after fixing the issue on a 2016 GMC Sierra?

- Yes, it is advisable to clear the trouble code B0956 after resolving the problem to reset the system and ensure that the issue has been successfully repaired.

9. Are there any common related codes that may appear alongside B0956 on a 2016 GMC Sierra?

- Depending on the root cause of the issue, related codes such as B0955 (Parking Assist Front Sensor Right Middle Circuit Range/Performance) or B0957 (Parking Assist Front Sensor Right Middle Circuit Low Voltage) may also be present.

10. How can I prevent OBDII code B0956 from recurring on my 2016 GMC Sierra?

- Regularly inspecting and maintaining the front parking assist system components, including sensors, wiring, and connectors, can help prevent issues that may trigger the B0956 trouble code.

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