AutoCodes – Chevrolet – B051C 2017 Chevrolet Silverado

B051C 2017 Chevrolet Silverado Code - Left Side Assist Step Position Sensor 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
B051C 2017 Chevrolet Silverado indicates Left Side Assist Step Position Sensor 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 340
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 13, 2022
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code B051C 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 B051C 2017 Chevrolet Silverado - Left Side Assist Step Position Sensor Circuit - AutoCodes.com
B051C 2017 Chevrolet Silverado Code - Left Side Assist Step Position Sensor Circuit

What are the Possible Causes of the DTC B051C 2017 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 B051C 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B051C 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 B051C 2017 Chevrolet Silverado code?

Need more information on how to fix the B051C 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B051C 2017 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 B051C 2017 Chevrolet Silverado Code

1. What does the OBDII code B051C indicate on a 2017 Chevrolet Silverado?

The code B051C indicates a fault in the Left Side Assist Step Position Sensor Circuit, suggesting an issue with the sensor or circuit controlling the deployable running board on the driver's side.

2. What are common symptoms of the B051C code on a 2017 Chevrolet Silverado?

Common symptoms include the left side assist step not deploying or retracting properly, unusual noises when the step is moving, or the step remaining stuck in one position.

3. What can cause the B051C code to appear on my 2017 Chevrolet Silverado?

Potential causes include a faulty position sensor, damaged wiring or connectors in the sensor circuit, or mechanical issues with the assist step mechanism itself.

4. How can I diagnose the B051C code on my 2017 Chevrolet Silverado?

Diagnosis should start with a visual inspection of the assist step mechanism and wiring for any obvious damage. Use a scan tool to check for additional codes and live data, and possibly a multimeter to verify the sensor's output and circuit continuity.

5. What is the repair process for the B051C code on a 2017 Chevrolet Silverado?

Repairs can involve replacing the faulty position sensor, repairing or replacing damaged wires or connectors, or in some cases, servicing or replacing the entire assist step assembly if mechanically faulty.

6. Is it safe to drive my 2017 Chevrolet Silverado with the B051C code?

While the vehicle can still be driven, the functionality of the left side assist step may be compromised, which could be inconvenient and potentially unsafe if the step is stuck in the deployed position.

7. How urgent is it to fix a B051C code on a 2017 Chevrolet Silverado?

It's moderately urgent to fix this issue to restore the proper function of your vehicle's assist step and ensure it does not pose a safety risk or further damage the mechanism.

8. Can I fix the B051C code on my 2017 Chevrolet Silverado by myself?

If you have experience with automotive electrical systems, you might manage to troubleshoot and repair simpler issues like sensor replacement or wiring repairs. However, more complex mechanical repairs might require professional assistance.

9. What tools are required to diagnose the B051C code on a 2017 Chevrolet Silverado?

You'll need a professional OBDII scanner, a multimeter for electrical testing, and basic hand tools for accessing the sensor and wiring.

Discuss the causes and fixes for B051C 2017 Chevrolet Silverado OBDII Code

Code B051C 2017 Chevrolet Silverado comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play