AutoCodes – Chevrolet – B051B Chevrolet

B051B Chevrolet Code - Right 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 Right Side Assist Step Motor, Right Side Assist Step Motor harness is open or shorted, Right 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: B051B Chevrolet indicates Right Side Assist Step Motor Control Circuit.
Common causes: Common causes include Faulty Right Side Assist Step Motor, Right Side Assist Step Motor harness is open or shorted, Right 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,395

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B051B Chevrolet 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 B051B Chevrolet - Right Side Assist Step Motor Control Circuit - AutoCodes.com — B051B Chevrolet Code - Right Side Assist Step Motor Control Circuit

What does this mean?

What are the Possible Causes of the DTC B051B Chevrolet?

Faulty Right Side Assist Step Motor
Right Side Assist Step Motor harness is open or shorted
Right Side Assist Step Motor circuit poor electrical connection
Faulty Assist Step Control (ASC) Module

How to Fix the DTC B051B Chevrolet?

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

B051B:0B Right Side Assist Step Motor Control Circuit Current Above Threshold
B051B:01 Right Side Assist Step Motor Control Circuit Short to Battery
B051B:02 Right Side Assist Step Motor Control Circuit Short to Ground
B051B:04 Right Side Assist Step Motor Control Circuit Open Circuit

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B051B Chevrolet 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 B051B Chevrolet code?

Need more information on how to fix the B051B Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B051B Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

B051B 2014 Chevrolet Silverado — Right Side Assist Step Motor Control Circuit
B051B 2015 Chevrolet Silverado — Right Side Assist Step Motor Control Circuit
B051B 2016 Chevrolet Silverado — Right Side Assist Step Motor Control Circuit
B051B 2017 Chevrolet Silverado — Right Side Assist Step Motor Control Circuit
B051B 2018 Chevrolet Silverado — Right Side Assist Step Motor Control Circuit

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 B051B Chevrolet Code

1. What are the common symptoms of OBDII code B051B in a Chevrolet related to the Right Side Assist Step Motor Control Circuit?

- Common symptoms include inoperative right side assist step, intermittent movement, or unusual noises coming from the motor.

2. What are the typical causes of OBDII code B051B in a Chevrolet indicating an issue with the Right Side Assist Step Motor Control Circuit?

- The most typical causes are faulty assist step motor, damaged wiring or connectors, or a malfunctioning control module.

3. How can I diagnose the issue causing OBDII code B051B in a Chevrolet related to the Right Side Assist Step Motor Control Circuit?

- To diagnose this issue, you can perform a visual inspection of the wiring and connectors, test the motor for functionality, and use a scan tool to check for any stored fault codes.

4. Can I repair OBDII code B051B in a Chevrolet myself if it's related to the Right Side Assist Step Motor Control Circuit?

- Depending on your skill level, you may be able to repair this issue yourself by replacing the faulty motor, repairing damaged wiring, or resetting the control module.

5. Are there any tips for preventing OBDII code B051B in a Chevrolet concerning the Right Side Assist Step Motor Control Circuit?

- Regularly inspecting the assist step system, avoiding physical damage to the motor or wiring, and addressing any issues promptly can help prevent this code from appearing.

6. Is it safe to drive my Chevrolet with OBDII code B051B related to the Right Side Assist Step Motor Control Circuit?

- It is generally safe to drive, but you may experience difficulties with the right side assist step function. It's advisable to address the issue as soon as possible to ensure proper operation.

7. How much does it typically cost to repair OBDII code B051B in a Chevrolet involving the Right Side Assist Step Motor Control Circuit?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $100 to $500 or more.

8. Can resetting the OBDII system clear OBDII code B051B in a Chevrolet related to the Right Side Assist Step Motor Control Circuit?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear after driving the vehicle.

9. Will OBDII code B051B affect the overall performance of my Chevrolet due to issues with the Right Side Assist Step Motor Control Circuit?

- While the performance of the vehicle may not be significantly impacted, the functionality of the right side assist step system will be affected until the issue is resolved.

10. How long does it typically take to repair OBDII code B051B in a Chevrolet associated with the Right Side Assist Step Motor Control Circuit?

- The repair time can vary based on the exact cause of the issue and the complexity of the repair, but it may take anywhere from 1 to 4 hours to complete the repairs.