AutoCodes – GMC – B052B 2018 GMC Sierra

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

Quick Answer

The Assist Step Control (ASC) Module controls the running board actuators to extend or retract the running boards. Common causes include Faulty Left Side Assist Step Motor, Left Side Assist Step Motor harness is open or shorted, Left Side Assist Step Motor 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: B052B 2018 GMC Sierra indicates Assist Step Position Sensor Supply Circuit.
Common causes: Common causes include Faulty Left Side Assist Step Motor, Left Side Assist Step Motor harness is open or shorted, Left Side Assist Step Motor 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 195

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 Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B052B 2018 GMC Sierra Description

The Assist Step Control (ASC) Module controls the running board actuators to extend or retract the running boards. Each actuator consists of an electric motor and a hall-effect switch. The module supplies a low reference and 10 V reference source voltage to the hall-effect switch. The assist step control module monitors the signal from the hall effect switch on the signal circuit. When the actuator shaft rotates, the hall-effect switch provides pulses to the assist step control module which uses the pulses as counts to determine the location of the assist steps. The assist step control module supplies the actuator motor with a 12 V control circuit and a ground control circuit. The assist step control module controls the direction of the actuator by changing the polarity of the control circuits.

OBDII Code B052B 2018 GMC Sierra - Assist Step Position Sensor Supply Circuit - AutoCodes.com — B052B 2018 GMC Sierra Code - Assist Step Position Sensor Supply Circuit

What does this mean?

What are the Possible Causes of the DTC B052B 2018 GMC Sierra?

Faulty Left Side Assist Step Motor
Left Side Assist Step Motor harness is open or shorted
Left Side Assist Step Motor circuit poor electrical connection
Faulty Assist Step Control (ASC) Module

How to Fix the DTC B052B 2018 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B052B 2018 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 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.