AutoCodes – GMC – B051C 2014 GMC Sierra

B051C 2014 GMC Sierra Code - Left Side Assist Step Position Sensor Circuit

Q: 1. What are common symptoms of OBDII code B051C in a 2014 GMC Sierra related to the Left Side Assist Step Position Sensor Circuit?

The common symptoms include malfunctioning or erratic behavior of the left side assist step, such as failing to deploy or retract properly.

Q: 2. What does the OBDII code B051C indicate in a 2014 GMC Sierra?

The code B051C indicates a problem with the Left Side Assist Step Position Sensor Circuit in a 2014 GMC Sierra.

Q: 3. What are the possible causes of OBDII code B051C in a 2014 GMC Sierra?

Possible causes of this code can include a faulty position sensor, damaged wiring or connectors, or issues with the assist step motor.

Q: 4. How can I diagnose the cause of OBDII code B051C in my 2014 GMC Sierra?

Diagnosing the issue may involve visually inspecting the wiring and connectors, testing the position sensor for proper function, and checking the assist step motor.

Q: 5. Can I repair OBDII code B051C in my 2014 GMC Sierra myself?

If you have experience with automotive electrical systems, you may be able to repair this code yourself by replacing the faulty position sensor, repairing damaged wiring, or addressing any other identified issues.

Q: 6. Is it safe to drive my 2014 GMC Sierra with OBDII code B051C active?

It is generally not recommended to drive with this code active, as it may affect the proper operation of the left side assist step, potentially leading to safety hazards or further damage.

Q: 7. How much does it typically cost to repair OBDII code B051C in a 2014 GMC Sierra at a dealership or repair shop?

The cost of repairing this code can vary depending on the specific issue, but it may involve parts and labor costs for sensor replacement, wiring repairs, or other necessary fixes.

Q: 8. Can resetting the OBDII system clear the B051C code in my 2014 GMC Sierra?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return once the problem is detected again.

Q: 9. Are there any preventative maintenance tips to avoid OBDII code B051C in a 2014 GMC Sierra?

Regularly inspecting the assist step system, keeping connectors clean and secure, and addressing any issues promptly can help prevent the occurrence of this code.

Q: 10. How urgent is it to address OBDII code B051C in my 2014 GMC Sierra?

While the urgency may vary depending on the severity of the symptoms, it is generally advisable to address this code promptly to ensure the proper functioning of the left side assist step and maintain vehicle safety.

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 2014 GMC Sierra 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.

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Code Popularity 172

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 B051C 2014 GMC Sierra 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 2014 GMC Sierra - Left Side Assist Step Position Sensor Circuit - AutoCodes.com — B051C 2014 GMC Sierra Code - Left Side Assist Step Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B051C 2014 GMC Sierra?

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 2014 GMC Sierra?

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

B051C:01 Left Side Assist Step Position Sensor Circuit Short to Battery
B051C:02 Left Side Assist Step Position Sensor Circuit Short to Ground
B051C:22 Left Side Assist Step Position Sensor Circuit Low Time < Minimum
B051C:29 Left Side Assist Step Position Sensor Circuit Too Few Pulses
B051C:2A Left Side Assist Step Position Sensor Circuit Too Many Pulses
B051C:62 Left Side Assist Step Position Sensor Circuit Actuator Stuck Open
B051C:63 Left Side Assist Step Position Sensor Circuit Actuator Stuck Closed

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B051C 2014 GMC Sierra 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 2014 GMC Sierra 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 B051C 2014 GMC Sierra Code

1. What are common symptoms of OBDII code B051C in a 2014 GMC Sierra related to the Left Side Assist Step Position Sensor Circuit?

The common symptoms include malfunctioning or erratic behavior of the left side assist step, such as failing to deploy or retract properly.

2. What does the OBDII code B051C indicate in a 2014 GMC Sierra?

The code B051C indicates a problem with the Left Side Assist Step Position Sensor Circuit in a 2014 GMC Sierra.

3. What are the possible causes of OBDII code B051C in a 2014 GMC Sierra?

Possible causes of this code can include a faulty position sensor, damaged wiring or connectors, or issues with the assist step motor.

4. How can I diagnose the cause of OBDII code B051C in my 2014 GMC Sierra?

Diagnosing the issue may involve visually inspecting the wiring and connectors, testing the position sensor for proper function, and checking the assist step motor.

5. Can I repair OBDII code B051C in my 2014 GMC Sierra myself?

If you have experience with automotive electrical systems, you may be able to repair this code yourself by replacing the faulty position sensor, repairing damaged wiring, or addressing any other identified issues.

6. Is it safe to drive my 2014 GMC Sierra with OBDII code B051C active?

It is generally not recommended to drive with this code active, as it may affect the proper operation of the left side assist step, potentially leading to safety hazards or further damage.

7. How much does it typically cost to repair OBDII code B051C in a 2014 GMC Sierra at a dealership or repair shop?

The cost of repairing this code can vary depending on the specific issue, but it may involve parts and labor costs for sensor replacement, wiring repairs, or other necessary fixes.

8. Can resetting the OBDII system clear the B051C code in my 2014 GMC Sierra?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return once the problem is detected again.

9. Are there any preventative maintenance tips to avoid OBDII code B051C in a 2014 GMC Sierra?

Regularly inspecting the assist step system, keeping connectors clean and secure, and addressing any issues promptly can help prevent the occurrence of this code.

10. How urgent is it to address OBDII code B051C in my 2014 GMC Sierra?

While the urgency may vary depending on the severity of the symptoms, it is generally advisable to address this code promptly to ensure the proper functioning of the left side assist step and maintain vehicle safety.