AutoCodes – Chevrolet – B051B 2017 Chevrolet Silverado

B051B 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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.

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Code Popularity 252

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 B051B 2017 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 B051B 2017 Chevrolet Silverado - Right Side Assist Step Motor Control Circuit - AutoCodes.com — B051B 2017 Chevrolet Silverado Code - Right Side Assist Step Motor Control Circuit

What does this mean?

What are the Possible Causes of the DTC B051B 2017 Chevrolet Silverado?

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 2017 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

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 2017 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 B051B 2017 Chevrolet Silverado code?

Need more information on how to fix the B051B 2017 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 B051B 2017 Chevrolet Silverado Code

1. What are common symptoms of OBDII code B051B in a 2017 Chevrolet Silverado?

Common symptoms include inoperative or malfunctioning right side assist step, warning lights on the dashboard, and potential loss of functionality.

2. What does the OBDII code B051B indicate in a 2017 Chevrolet Silverado?

The code B051B signifies a fault in the right side assist step motor control circuit of the vehicle.

3. What are possible causes of OBDII code B051B on a 2017 Chevrolet Silverado?

Potential causes include a faulty assist step motor, damaged wiring or connectors, a defective control module, or a communication issue within the system.

4. How can I diagnose the OBDII code B051B on my 2017 Chevrolet Silverado?

Diagnosis involves using an OBDII scanner to retrieve the code, inspecting the wiring and connectors related to the right side assist step, and testing the motor and control module for proper functionality.

5. Can I drive my 2017 Chevrolet Silverado with OBDII code B051B?

It is not recommended to drive the vehicle with the code B051B present, as it may indicate a safety-related issue with the right side assist step system.

6. How can I repair OBDII code B051B on my 2017 Chevrolet Silverado?

Repair options include replacing the faulty assist step motor, repairing damaged wiring or connectors, resetting the control module, or addressing any communication issues in the system.

7. Is it possible to clear OBDII code B051B in a 2017 Chevrolet Silverado without fixing the issue?

Clearing the code without addressing the underlying problem may temporarily remove the warning lights, but the issue will likely reoccur until the root cause is resolved.

8. Can a DIY enthusiast fix OBDII code B051B on a 2017 Chevrolet Silverado?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair the code B051B, but professional assistance is recommended for complex issues.

9. How much does it cost to repair OBDII code B051B on a 2017 Chevrolet Silverado?

The cost of repair can vary depending on the specific cause of the code B051B, but it may involve parts replacement, labor costs, and diagnostic fees from a mechanic or dealership.

10. How can I prevent OBDII code B051B from recurring in my 2017 Chevrolet Silverado?

Regular maintenance checks, timely repairs of any assist step system issues, and proper handling of the vehicle can help prevent the reoccurrence of the B051B trouble code.