AutoCodes – GMC – B051E 2015 GMC Sierra

B051E 2015 GMC Sierra 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 2015 GMC Sierra 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 168

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 2015 GMC Sierra 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 2015 GMC Sierra - Assist Step Disable Switch Circuit - AutoCodes.com — B051E 2015 GMC Sierra Code - Assist Step Disable Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B051E 2015 GMC Sierra?

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 2015 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 B051E 2015 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.

Need more information about the B051E 2015 GMC Sierra code?

Need more information on how to fix the B051E 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2015 GMC Sierra Code

1. What does the OBDII code B051E for a 2015 GMC Sierra mean?

The code B051E indicates a problem with the Assist Step Disable Switch Circuit in the vehicle.

2. What are the common symptoms of the B051E OBDII code in a 2015 GMC Sierra?

Common symptoms of the B051E code may include inoperative assist steps, illuminated warning lights on the dashboard, or a disabled assist step switch.

3. What are the possible causes of the B051E OBDII code in a 2015 GMC Sierra?

Potential causes of the B051E code can include a faulty assist step disable switch, damaged wiring or connectors in the circuit, or a malfunctioning control module.

4. How can I diagnose the B051E OBDII code in my 2015 GMC Sierra?

Diagnosing the B051E code typically involves inspecting the assist step disable switch, checking the wiring and connectors for damage, and using a scan tool to retrieve specific diagnostic trouble codes.

5. How can I repair the Assist Step Disable Switch Circuit issue associated with the B051E code in a 2015 GMC Sierra?

Repairing the B051E code may involve replacing the faulty assist step disable switch, repairing damaged wiring or connectors, or reprogramming the control module if necessary.

6. Can I continue driving my 2015 GMC Sierra with the B051E OBDII code present?

It is not recommended to continue driving your vehicle with the B051E code active, as it may affect the functionality of the assist steps and potentially lead to safety issues.

7. How much does it typically cost to repair the B051E OBDII code in a 2015 GMC Sierra?

The cost of repairing the B051E code can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Is the B051E OBDII code a common problem in 2015 GMC Sierra vehicles?

The B051E code related to the Assist Step Disable Switch Circuit is not as common as some other OBDII codes, but it can still occur in 2015 GMC Sierra models, particularly as the vehicle ages.

9. Can I reset the B051E OBDII code in my 2015 GMC Sierra myself?

While you may be able to clear the B051E code temporarily by disconnecting the vehicle's battery, it is recommended to diagnose and repair the underlying issue to prevent the code from reoccurring.

10. Is it necessary to visit a dealership for repairs related to the B051E OBDII code in a 2015 GMC Sierra?

While a dealership may have specialized knowledge of GMC vehicles, an experienced mechanic or repair shop should be able to diagnose and repair the B051E code in a 2015 GMC Sierra effectively.