AutoCodes – Buick – B051C Buick

B051C Buick Code - Left Side Assist Step Position Sensor Circuit

Q: 1. What are the common symptoms of OBDII code B051C in a Buick related to the Left Side Assist Step Position Sensor Circuit?

The common symptoms include the left side assist step not deploying or retracting properly, the assist step getting stuck in one position, or the vehicle displaying a warning light on the dashboard.

Q: 2. What are some possible causes of OBDII code B051C in a Buick?

Possible causes of this code include a faulty left side assist step position sensor, damaged wiring or connectors in the circuit, or a malfunction in the control module that manages the assist step.

Q: 3. How can I diagnose the cause of OBDII code B051C in my Buick?

Diagnosing this code typically involves using a scan tool to retrieve the specific error codes, testing the left side assist step position sensor and its circuit for continuity and proper operation, and inspecting the wiring and connectors for any visible damage.

Q: 4. Can I repair OBDII code B051C in my Buick by myself?

Depending on your level of automotive expertise, you may be able to repair this code yourself by replacing the faulty left side assist step position sensor, repairing damaged wiring or connectors, or resetting the control module after fixing the issue.

Q: 5. Is it safe to drive my Buick with OBDII code B051C related to the Left Side Assist Step Position Sensor Circuit?

It is generally not recommended to drive your Buick with this code active, as it may affect the proper operation of the left side assist step, potentially causing safety issues or further damage to the system.

Q: 6. How much does it typically cost to repair OBDII code B051C in a Buick at a dealership or repair shop?

The cost of repairing this code can vary depending on the specific issue, but it may involve diagnostic fees, parts replacement costs, and labor charges, which can range from a few hundred to over a thousand dollars.

Q: 7. Can resetting the error codes using a scan tool fix OBDII code B051C in my Buick?

Resetting the error codes may temporarily clear the warning light on the dashboard, but it will not fix the underlying issue causing the code. It is important to diagnose and repair the problem to prevent it from reoccurring.

Q: 8. Are there any preventive maintenance tips to avoid OBDII code B051C in a Buick?

To prevent this code from recurring, you can regularly inspect the assist step position sensor and its wiring for any signs of wear or damage, keep the components clean and free of debris, and address any issues promptly to prevent further damage.

Q: 9. Can extreme weather conditions affect the Left Side Assist Step Position Sensor Circuit in a Buick?

Extreme weather conditions such as extreme cold or heat can potentially affect the performance of the assist step position sensor and its circuit, leading to issues that trigger OBDII code B051C. It is important to keep the components protected and maintained in such conditions.

Q: 10. How long does it typically take to repair OBDII code B051C related to the Left Side Assist Step Position Sensor Circuit in a Buick?

The repair time for this code can vary depending on the extent of the issue and the availability of parts. It may take a few hours to a day for a skilled mechanic to diagnose and repair the problem effectively.

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: B051C Buick indicates Left Side Assist Step Position Sensor 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 1,064

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 13, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B051C 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 potentiometer. The module supplies a low reference and 10-volt reference source voltage to the potentiometer. The ASC control module monitors the voltage drop across the potentiometer on the position signal circuit. When the actuator shaft rotates, the voltage on the position signal circuit changes. The ASC control module supplies the actuator motor with a 12-volt control circuit and a ground control circuit. The ASC module controls the direction of the actuator by changing the polarity of the control circuits.

OBDII Code B051C Buick - Left Side Assist Step Position Sensor Circuit - AutoCodes.com — B051C Buick Code - Left Side Assist Step Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B051C 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 B051C 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 does this mean?

Code Tech Notes

B051C:01 Left Side Assist Step Position Sensor Circuit Short to Battery
B051C:02 Left Side Assist Step Position Sensor Circuit Short to Ground
B051C:22 Left Side Assist Step Position Sensor Circuit Low Time < Minimum
B051C:29 Left Side Assist Step Position Sensor Circuit Too Few Pulses
B051C:2A Left Side Assist Step Position Sensor Circuit Too Many Pulses
B051C:62 Left Side Assist Step Position Sensor Circuit Actuator Stuck Open
B051C:63 Left Side Assist Step Position Sensor Circuit Actuator Stuck Closed

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B051C 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 B051C Buick Code

1. What are the common symptoms of OBDII code B051C in a Buick related to the Left Side Assist Step Position Sensor Circuit?

The common symptoms include the left side assist step not deploying or retracting properly, the assist step getting stuck in one position, or the vehicle displaying a warning light on the dashboard.

2. What are some possible causes of OBDII code B051C in a Buick?

Possible causes of this code include a faulty left side assist step position sensor, damaged wiring or connectors in the circuit, or a malfunction in the control module that manages the assist step.

3. How can I diagnose the cause of OBDII code B051C in my Buick?

Diagnosing this code typically involves using a scan tool to retrieve the specific error codes, testing the left side assist step position sensor and its circuit for continuity and proper operation, and inspecting the wiring and connectors for any visible damage.

4. Can I repair OBDII code B051C in my Buick by myself?

Depending on your level of automotive expertise, you may be able to repair this code yourself by replacing the faulty left side assist step position sensor, repairing damaged wiring or connectors, or resetting the control module after fixing the issue.

5. Is it safe to drive my Buick with OBDII code B051C related to the Left Side Assist Step Position Sensor Circuit?

It is generally not recommended to drive your Buick with this code active, as it may affect the proper operation of the left side assist step, potentially causing safety issues or further damage to the system.

6. How much does it typically cost to repair OBDII code B051C in a Buick at a dealership or repair shop?

The cost of repairing this code can vary depending on the specific issue, but it may involve diagnostic fees, parts replacement costs, and labor charges, which can range from a few hundred to over a thousand dollars.

7. Can resetting the error codes using a scan tool fix OBDII code B051C in my Buick?

Resetting the error codes may temporarily clear the warning light on the dashboard, but it will not fix the underlying issue causing the code. It is important to diagnose and repair the problem to prevent it from reoccurring.

8. Are there any preventive maintenance tips to avoid OBDII code B051C in a Buick?

To prevent this code from recurring, you can regularly inspect the assist step position sensor and its wiring for any signs of wear or damage, keep the components clean and free of debris, and address any issues promptly to prevent further damage.

9. Can extreme weather conditions affect the Left Side Assist Step Position Sensor Circuit in a Buick?

Extreme weather conditions such as extreme cold or heat can potentially affect the performance of the assist step position sensor and its circuit, leading to issues that trigger OBDII code B051C. It is important to keep the components protected and maintained in such conditions.

10. How long does it typically take to repair OBDII code B051C related to the Left Side Assist Step Position Sensor Circuit in a Buick?

The repair time for this code can vary depending on the extent of the issue and the availability of parts. It may take a few hours to a day for a skilled mechanic to diagnose and repair the problem effectively.