AutoCodes – Buick – B051E Buick

B051E Buick Code - Assist Step Disable Switch Circuit

Quick Answer

The Assist Step Control (ASC) Module monitors a signal circuit to the assist step disable switch. Common causes include Faulty Assist Step Disable Switch, Assist Step Disable Switch harness is open or shorted, Assist Step Disable Switch 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: B051E Buick indicates Assist Step Disable Switch Circuit.
Common causes: Common causes include Faulty Assist Step Disable Switch, Assist Step Disable Switch harness is open or shorted, Assist Step Disable Switch 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 264

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 B051E Buick Description

The Assist Step Control (ASC) Module monitors a signal circuit to the assist step disable switch. When the switch is pressed, a ground path is provided to the signal circuit. Pressing the switch with the doors closed while in Park or Neutral will extend the boards for washing. Pressing and holding the switch for 4 s will disable/enable running boards by putting them in Locked mode. The Diagnostic Trouble Code (DTC) will be set when the signal circuit is shorted to ground for longer than 1 min.

OBDII Code B051E Buick - Assist Step Disable Switch Circuit - AutoCodes.com — B051E Buick Code - Assist Step Disable Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B051E Buick?

Faulty Assist Step Disable Switch
Assist Step Disable Switch harness is open or shorted
Assist Step Disable Switch circuit poor electrical connection
Faulty Assist Step Control (ASC) Module

How to Fix the DTC B051E 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 B051E 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 B051E Buick Code

1. What are the common symptoms of OBDII code B051E Buick (Assist Step Disable Switch Circuit)?

- The common symptoms include inoperative assist steps, disabled assist step switch, and an illuminated dashboard warning light.

2. What are the possible causes of OBDII code B051E in a Buick?

- The code may be triggered by a faulty assist step disable switch, damaged wiring or connectors in the circuit, or a malfunctioning control module.

3. How can I diagnose the OBDII code B051E in my Buick?

- Diagnosis involves inspecting the assist step disable switch, checking the wiring and connectors for damage, and using a scan tool to retrieve the specific fault codes.

4. Can I continue driving my Buick with OBDII code B051E present?

- It is not recommended to drive the vehicle with the code active, as it may lead to further issues with the assist steps and potentially compromise safety.

5. What are some repair tips for resolving OBDII code B051E in a Buick?

- Repair tips include checking and replacing the assist step disable switch, repairing any damaged wiring or connectors, and resetting the control module after repairs.

6. How much does it typically cost to fix OBDII code B051E in a Buick?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Can I reset the OBDII code B051E in my Buick without professional help?

- While you can attempt to clear the code with an OBDII scanner, it is recommended to diagnose and repair the underlying issue to prevent the code from recurring.

8. Is OBDII code B051E Buick (Assist Step Disable Switch Circuit) a common issue in Buick vehicles?

- The code is not extremely common but has been reported in some Buick models with assist step systems.

9. Will fixing OBDII code B051E affect the operation of other vehicle systems?

- Fixing the code should only address issues related to the assist step disable switch circuit and should not impact the operation of other vehicle systems.

10. How long does it typically take to repair OBDII code B051E in a Buick?

- The repair time can vary based on the complexity of the issue, but most fixes can be completed within a few hours by a qualified mechanic.