AutoCodes – Chevrolet – B051B 2016 Chevrolet Silverado

B051B 2016 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 2016 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 258

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 2016 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 2016 Chevrolet Silverado - Right Side Assist Step Motor Control Circuit - AutoCodes.com — B051B 2016 Chevrolet Silverado Code - Right Side Assist Step Motor Control Circuit

What does this mean?

What are the Possible Causes of the DTC B051B 2016 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 2016 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 2016 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 2016 Chevrolet Silverado 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 B051B 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B051B in a 2016 Chevrolet Silverado?

- Common symptoms include malfunctioning or non-operational right-side assist step motor, difficulty extending or retracting the assist step, and potential warning lights on the dashboard.

2. What can cause the OBDII code B051B to trigger in a 2016 Chevrolet Silverado?

- The code B051B typically triggers due to issues with the right side assist step motor control circuit, such as wiring faults, a malfunctioning control module, or a defective assist step motor.

3. How can I diagnose the cause of OBDII code B051B in my 2016 Chevrolet Silverado?

- Diagnosis involves inspecting the wiring harness for damage, testing the control module and motor for proper functionality, and checking for any loose connections or corrosion in the circuit.

4. Can I still drive my 2016 Chevrolet Silverado with the OBDII code B051B present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the proper functioning of the right-side assist step.

5. What are some repair tips for fixing OBDII code B051B in a 2016 Chevrolet Silverado?

- Repair tips include repairing or replacing damaged wiring, testing and replacing the control module or motor if necessary, and resetting the system after the repairs have been made.

6. How much does it typically cost to repair OBDII code B051B in a 2016 Chevrolet Silverado?

- The cost of repairs can vary depending on the specific issue causing the code, but it may involve labor costs for diagnosis and repair, as well as potential expenses for replacement parts.

7. Is the OBDII code B051B a common issue in 2016 Chevrolet Silverado vehicles?

- While not extremely common, issues with the right side assist step motor control circuit can occur in some 2016 Chevrolet Silverado vehicles, leading to the triggering of code B051B.

8. Can I reset the OBDII code B051B in my 2016 Chevrolet Silverado myself?

- You can attempt to reset the code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. Will fixing OBDII code B051B improve the overall performance of my 2016 Chevrolet Silverado?

- Fixing the code B051B will restore the proper functioning of the right side assist step system, which can improve convenience and safety when entering or exiting the vehicle.

10. How can I prevent OBDII code B051B from occurring in my 2016 Chevrolet Silverado in the future?

- Regularly inspecting the assist step system, ensuring proper maintenance, and addressing any issues promptly can help prevent the recurrence of code B051B in your vehicle.