AutoCodes – Buick – B052B Buick

B052B Buick 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 Buick 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 281

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 Buick 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 Buick - Assist Step Position Sensor Supply Circuit - AutoCodes.com — B052B Buick Code - Assist Step Position Sensor Supply Circuit

What does this mean?

What are the Possible Causes of the DTC B052B Buick?

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 Buick?

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 Buick 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 Buick Code

1. What are common symptoms of OBDII code B052B in a Buick related to the Assist Step Position Sensor Supply Circuit?

- Common symptoms include malfunctioning power running boards, incorrect step deployment, and illuminated warning lights on the dashboard.

2. What can cause the OBDII code B052B to trigger in a Buick?

- The code B052B typically triggers due to a faulty assist step position sensor or issues with the sensor's supply circuit.

3. How can I diagnose the OBDII code B052B in my Buick related to the Assist Step Position Sensor Supply Circuit?

- Diagnosis involves using an OBDII scanner to retrieve the specific code, inspecting the assist step position sensor and its wiring for damage, and testing the sensor's functionality.

4. Are there any simple repair tips for fixing the OBDII code B052B in a Buick?

- Basic repair tips include checking and repairing any damaged wiring or connectors related to the assist step position sensor supply circuit and replacing the sensor if necessary.

5. Is it safe to drive my Buick with the OBDII code B052B related to the Assist Step Position Sensor Supply Circuit?

- It is generally not recommended to drive the vehicle with this code active, as it can affect the proper functioning of the power running boards, potentially leading to safety hazards.

6. Can resetting the OBDII code B052B in my Buick fix the issue temporarily?

- Resetting the code may temporarily clear the warning lights, but it will not fix the underlying problem with the assist step position sensor supply circuit.

7. How much does it typically cost to repair the OBDII code B052B in a Buick?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the assist step position sensor or repairing the sensor's supply circuit, potentially costing a few hundred dollars.

8. Are there any recalls or technical service bulletins related to the OBDII code B052B in Buick vehicles?

- It's recommended to check with your local Buick dealership or visit the NHTSA website to see if there are any recalls or technical service bulletins related to this specific OBDII code in your Buick model.

9. Can a DIY enthusiast with basic automotive knowledge fix the OBDII code B052B in a Buick?

- Depending on the root cause of the issue, a DIY enthusiast with basic automotive knowledge may be able to repair the code by inspecting and possibly replacing the assist step position sensor or repairing the wiring.

10. How can I prevent the OBDII code B052B related to the Assist Step Position Sensor Supply Circuit from recurring in my Buick?

- To prevent the code from recurring, it's essential to regularly inspect and maintain the assist step position sensor, ensure proper wiring connections, and address any issues promptly to avoid further damage.