AutoCodes – Chevrolet – B051A 2014 Chevrolet Silverado

B051A 2014 Chevrolet Silverado Code - Left Side Assist Step Motor Control 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: B051A 2014 Chevrolet Silverado indicates Left Side Assist Step Motor Control 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 260

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 B051A 2014 Chevrolet Silverado 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 B051A 2014 Chevrolet Silverado - Left Side Assist Step Motor Control Circuit - AutoCodes.com — B051A 2014 Chevrolet Silverado Code - Left Side Assist Step Motor Control Circuit

What does this mean?

What are the Possible Causes of the DTC B051A 2014 Chevrolet Silverado?

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 B051A 2014 Chevrolet Silverado?

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

B051A:0B Left Side Assist Step Motor Control Circuit Current Above Threshold
B051A:01 Left Side Assist Step Motor Control Circuit Short to Battery
B051A:02 Left Side Assist Step Motor Control Circuit Short to Ground
B051A:04 Left Side Assist Step Motor Control Circuit Open Circuit

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B051A 2014 Chevrolet Silverado 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 B051A 2014 Chevrolet Silverado code?

Need more information on how to fix the B051A 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 B051A 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B051A in a 2014 Chevrolet Silverado?

The common symptoms of OBDII code B051A include malfunctioning or inoperative left side assist step motor, difficulty in deploying or retracting the assist step, and an illuminated warning light on the dashboard.

2. What could cause the OBDII code B051A in a 2014 Chevrolet Silverado?

The OBDII code B051A in a 2014 Chevrolet Silverado is typically caused by issues with the left side assist step motor control circuit, such as wiring faults, a faulty motor, or a malfunctioning control module.

3. How can I diagnose the OBDII code B051A in my 2014 Chevrolet Silverado?

To diagnose the OBDII code B051A, you can use a scan tool to retrieve the code and then inspect the left side assist step motor control circuit for any visible damage or loose connections. Checking the wiring harness and the motor itself is also recommended.

4. Can I repair the OBDII code B051A issue in my 2014 Chevrolet Silverado myself?

If you have experience with automotive electrical systems, you may be able to repair the OBDII code B051A issue yourself by identifying and fixing any wiring faults, replacing the left side assist step motor if necessary, or resetting the control module.

5. Are there any reset procedures for clearing the OBDII code B051A in a 2014 Chevrolet Silverado?

Resetting the OBDII code B051A in a 2014 Chevrolet Silverado can be done by using a scan tool to clear the code after addressing the underlying issue with the left side assist step motor control circuit. It is important to ensure the repair has been successful before clearing the code.

6. How do I prevent the OBDII code B051A from recurring in my 2014 Chevrolet Silverado?

To prevent the OBDII code B051A from recurring in your 2014 Chevrolet Silverado, regularly inspect and maintain the left side assist step motor control circuit, keep the wiring harness secure and free from damage, and address any issues promptly to avoid further damage.

7. Is it safe to drive my 2014 Chevrolet Silverado with the OBDII code B051A illuminated?

It is generally safe to drive your 2014 Chevrolet Silverado with the OBDII code B051A illuminated, but you may experience difficulties with the left side assist step operation. It is recommended to address the issue promptly to ensure proper functionality.

8. Can extreme weather conditions affect the left side assist step motor control circuit in a 2014 Chevrolet Silverado?

Extreme weather conditions can potentially affect the left side assist step motor control circuit in a 2014 Chevrolet Silverado, causing wiring issues or motor malfunctions. It is important to protect the circuit from exposure to harsh elements.

9. What is the purpose of the left side assist step motor in a 2014 Chevrolet Silverado?

The left side assist step motor in a 2014 Chevrolet Silverado is responsible for deploying and retracting the assist step to assist passengers in entering and exiting the vehicle more easily.

10. Are there any recalls or technical service bulletins related to the OBDII code B051A in a 2014 Chevrolet Silverado?

It is advisable to check with a Chevrolet dealership or refer to the manufacturer's website for any recalls or technical service bulletins related to the OBDII code B051A in a 2014 Chevrolet Silverado, as there may be specific information or remedies available.