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Engine-Codes – GMC – B052B 2018 GMC Sierra

B052B 2018 GMC Sierra Code - Assist Step Position Sensor Supply Circuit

Quick Answer

The B052B diagnostic trouble code (DTC) for a 2018 GMC Sierra pertains to the Assist Step Position Sensor Supply Circuit. Common causes include Faulty wiring or connectors in the assist step position sensor supply circuit, Malfunctioning assist step position sensor, Issues with the vehicle's control module that controls the assist step system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B052B 2018 GMC Sierra indicates Assist Step Position Sensor Supply Circuit.
Common causes
Common causes include Faulty wiring or connectors in the assist step position sensor supply circuit, Malfunctioning assist step position sensor, Issues with the vehicle's control module that controls the assist step system.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B052B 2018 GMC Sierra Description

The B052B diagnostic trouble code (DTC) for a 2018 GMC Sierra pertains to the Assist Step Position Sensor Supply Circuit. This code indicates that there is a malfunction in the circuit responsible for supplying power to the assist step position sensor. The assist step position sensor is a crucial component that helps control the movement and positioning of the vehicle's automatic running boards or steps. When this sensor is not functioning properly, it can affect the deployment and retraction of the assist steps, leading to potential safety hazards and inconvenience for the vehicle occupants.

OBDII Code B052B 2018 GMC Sierra - Assist Step Position Sensor Supply Circuit
B052B 2018 GMC Sierra Code - Assist Step Position Sensor Supply Circuit

Common Causes of B052B 2018 GMC Sierra

  1. Faulty wiring or connectors in the assist step position sensor supply circuit.
  2. Malfunctioning assist step position sensor.
  3. Issues with the vehicle's control module that controls the assist step system.
  4. Corrosion or damage to electrical components in the circuit.
  5. Environmental factors such as water intrusion or debris affecting the sensor.

Symptoms of B052B 2018 GMC Sierra

  1. Assist steps not deploying or retracting when the doors are opened or closed.
  2. Erratic movement or jerking motion of the assist steps.
  3. Warning light on the dashboard indicating an issue with the assist step system.
  4. Unusual noises coming from the assist steps during operation.
  5. Inability to manually control the assist steps.

How to Fix B052B 2018 GMC Sierra

  1. Begin by conducting a thorough inspection of the assist step position sensor supply circuit, checking for any visible damage or loose connections.
  2. Use a multimeter to test the voltage and continuity of the circuit to identify any inconsistencies or faults.
  3. Replace any damaged wiring, connectors, or components in the circuit as needed.
  4. Test the assist step position sensor to ensure it is functioning correctly and replace it if necessary.
  5. Clear the DTC from the vehicle's computer system using a diagnostic scanner to reset the system and verify that the issue has been resolved.

Cost to Fix B052B 2018 GMC Sierra

The typical repair costs for addressing a B052B code related to the Assist Step Position Sensor Supply Circuit in a 2018 GMC Sierra can vary depending on the extent of the issue and the specific components that require replacement. In general, the parts needed for this repair, such as wiring, connectors, or sensors, may range from $100 to $300. Labor costs can add an additional $100 to $200, bringing the total repair estimate to approximately $200 to $500.

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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 B052B 2018 GMC Sierra Code

1. What does OBDII code B052B for a 2018 GMC Sierra indicate?

The code B052B refers to a fault in the Assist Step Position Sensor Supply Circuit on the 2018 GMC Sierra.

2. What are the common symptoms of OBDII code B052B on a 2018 GMC Sierra?

Common symptoms of this code may include malfunctioning power running boards, warning lights on the dashboard, and issues with the assist step position sensor.

3. What are the possible causes of OBDII code B052B on a 2018 GMC Sierra?

Potential causes of this code include wiring issues, a faulty assist step position sensor, or a problem with the control module.

4. How can I diagnose OBDII code B052B on a 2018 GMC Sierra?

Diagnosing this code typically involves using a scan tool to retrieve the specific fault code, checking the wiring and connections related to the assist step position sensor, and testing the sensor itself for proper functionality.

5. Can I still drive my 2018 GMC Sierra with OBDII code B052B?

It is not recommended to drive the vehicle with this code present, as it can affect the proper operation of the power running boards and potentially lead to further issues.

6. How do I repair OBDII code B052B on a 2018 GMC Sierra?

Repairing this code may involve repairing or replacing damaged wiring, replacing the faulty assist step position sensor, or addressing any issues with the control module as needed.

7. Is it possible to reset OBDII code B052B on a 2018 GMC Sierra without repairs?

While clearing the code with a scan tool may temporarily reset the warning lights, it is important to address the underlying issue causing the code to prevent further problems.

8. Are there any common mistakes to avoid when dealing with OBDII code B052B on a 2018 GMC Sierra?

Common mistakes include overlooking wiring issues, replacing components without proper diagnosis, and failing to clear the code after repairs are completed.

9. How much does it typically cost to repair OBDII code B052B on a 2018 GMC Sierra?

The cost of repairs for this code can vary depending on the specific issue, parts needed, and labor rates, so it is recommended to consult with a professional mechanic for an accurate estimate.

10. Can I prevent OBDII code B052B from appearing on my 2018 GMC Sierra in the future?

Regular maintenance, such as checking the wiring connections and keeping the assist step position sensor clean and free of debris, can help prevent issues that may trigger this code.

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