AutoCodes – Chevrolet – B051B 2018 Chevrolet Silverado

B051B 2018 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 2018 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 253

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 2018 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 2018 Chevrolet Silverado - Right Side Assist Step Motor Control Circuit - AutoCodes.com — B051B 2018 Chevrolet Silverado Code - Right Side Assist Step Motor Control Circuit

What does this mean?

What are the Possible Causes of the DTC B051B 2018 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 2018 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 2018 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 2018 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 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B051B in a 2018 Chevrolet Silverado related to the Right Side Assist Step Motor Control Circuit?

- The common symptoms include malfunctioning or unresponsive assist steps on the right side of the vehicle.

2. What could cause OBDII code B051B to trigger in a 2018 Chevrolet Silverado?

- The code B051B can be triggered by issues such as a faulty assist step motor, damaged wiring, or a malfunctioning control module.

3. How can I diagnose the Right Side Assist Step Motor Control Circuit issue in my 2018 Chevrolet Silverado?

- Diagnosis typically involves checking the wiring harness, connectors, and the motor itself for any signs of damage or malfunction using a multimeter and diagnostic scanner.

4. What are the recommended repair tips for addressing OBDII code B051B in a 2018 Chevrolet Silverado?

- Repair tips may include repairing or replacing damaged wiring, connectors, or the assist step motor itself. It is also important to ensure proper connection and functionality of the control module.

5. Can I reset the OBDII code B051B in my 2018 Chevrolet Silverado without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is recommended to address the root cause of the problem to prevent it from reoccurring and ensure the proper functioning of the assist steps.

6. Is it safe to drive my 2018 Chevrolet Silverado with OBDII code B051B triggered?

- It is generally safe to drive the vehicle with this code, but it is advised to address the issue promptly to avoid any inconvenience or potential safety hazards related to the malfunctioning assist steps.

7. How much does it typically cost to repair OBDII code B051B in a 2018 Chevrolet Silverado?

- The cost of repair can vary depending on the extent of the damage and the parts that need to be replaced. It is recommended to consult a mechanic for a more accurate estimate.

8. Can extreme weather conditions affect the Right Side Assist Step Motor Control Circuit in a 2018 Chevrolet Silverado?

- Extreme weather conditions can potentially impact the operation of the assist steps and contribute to issues triggering OBDII code B051B. It is important to keep the vehicle protected and maintained in harsh conditions.

9. Are there any preventative measures to avoid OBDII code B051B in a 2018 Chevrolet Silverado?

- Regular inspection and maintenance of the assist steps, wiring, and control module can help prevent issues that lead to the triggering of code B051B in a 2018 Chevrolet Silverado.

10. How long does it typically take to repair the Right Side Assist Step Motor Control Circuit issue triggering OBDII code B051B in a 2018 Chevrolet Silverado?

- The repair time can vary depending on the extent of the damage and the availability of parts. It is advisable to consult a professional mechanic for an accurate timeframe for the repair process.