AutoCodes – GMC – B051D 2018 GMC Sierra

B051D 2018 GMC Sierra Code - Right Side Assist Step Position Sensor Circuit

Q: 1. What are the common symptoms of OBDII code B051D on a 2018 GMC Sierra related to the Right Side Assist Step Position Sensor Circuit?

The common symptoms include the right-side assist step not deploying or retracting properly, or the vehicle displaying a warning light indicating an issue with the assist step system.

Q: 2. What could cause the OBDII code B051D to trigger on a 2018 GMC Sierra?

Potential causes of this code include a faulty right side assist step position sensor, damaged wiring or connectors in the circuit, or a malfunction in the assist step control module.

Q: 3. How can I diagnose the issue causing OBDII code B051D on my 2018 GMC Sierra?

Diagnosing this code typically involves a visual inspection of the assist step components, checking the wiring and connectors for damage, and using a diagnostic scanner to read the specific error codes stored in the system.

Q: 4. Can I still drive my 2018 GMC Sierra with OBDII code B051D active?

While the vehicle may still be operable with this code present, it is recommended to address the issue promptly to ensure the proper functioning of the right side assist step system.

Q: 5. What are some repair tips for fixing OBDII code B051D on a 2018 GMC Sierra?

Repair tips may include checking and repairing any damaged wiring or connectors, replacing the right side assist step position sensor if necessary, or resetting the system after making repairs.

Q: 6. Is it safe to attempt DIY repairs for OBDII code B051D on a 2018 GMC Sierra?

If you have the necessary tools and knowledge, some DIY repairs like checking and repairing wiring connections can be safely attempted. However, more complex issues may require professional assistance.

Q: 7. How can I reset the OBDII code B051D on my 2018 GMC Sierra after making repairs?

After addressing the underlying issue causing the code, you can reset the OBDII code using a diagnostic scanner or by disconnecting the vehicle's battery for a few minutes to clear the error code.

Q: 8. Are there any recalls or technical service bulletins related to OBDII code B051D on the 2018 GMC Sierra?

It's recommended to check with a GMC dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific OBDII code for your vehicle.

Q: 9. How much does it typically cost to repair OBDII code B051D on a 2018 GMC Sierra at a dealership or repair shop?

The cost of repairing this code can vary depending on the underlying issue, parts needed, and labor rates. It's advisable to get a diagnostic inspection and repair estimate from a trusted dealership or repair shop.

Q: 10. What long-term effects can OBDII code B051D have on the 2018 GMC Sierra if left unresolved?

Leaving this code unresolved could potentially lead to further damage to the right side assist step system, affecting its functionality and safety. It's best to address the issue promptly to avoid any long-term complications.

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: B051D 2018 GMC Sierra indicates Right Side Assist Step Position Sensor 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 271

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 18, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B051D 2018 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 B051D 2018 GMC Sierra - Right Side Assist Step Position Sensor Circuit - AutoCodes.com — B051D 2018 GMC Sierra Code - Right Side Assist Step Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B051D 2018 GMC Sierra?

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 B051D 2018 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

B051D:01 Right Side Assist Step Position Sensor Circuit Short to Battery
B051D:02 Right Side Assist Step Position Sensor Circuit Short to Ground
B051D:22 Right Side Assist Step Position Sensor Circuit Low Time < Minimum
B051D:29 Right Side Assist Step Position Sensor Circuit Too Few Pulses
B051D:2A Right Side Assist Step Position Sensor Circuit Too Many Pulses
B051D:62 Right Side Assist Step Position Sensor Circuit Actuator Stuck Open
B051D:63 Right Side Assist Step Position Sensor Circuit Actuator Stuck Closed

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B051D 2018 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 B051D 2018 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 B051D 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code B051D on a 2018 GMC Sierra related to the Right Side Assist Step Position Sensor Circuit?

The common symptoms include the right-side assist step not deploying or retracting properly, or the vehicle displaying a warning light indicating an issue with the assist step system.

2. What could cause the OBDII code B051D to trigger on a 2018 GMC Sierra?

Potential causes of this code include a faulty right side assist step position sensor, damaged wiring or connectors in the circuit, or a malfunction in the assist step control module.

3. How can I diagnose the issue causing OBDII code B051D on my 2018 GMC Sierra?

Diagnosing this code typically involves a visual inspection of the assist step components, checking the wiring and connectors for damage, and using a diagnostic scanner to read the specific error codes stored in the system.

4. Can I still drive my 2018 GMC Sierra with OBDII code B051D active?

While the vehicle may still be operable with this code present, it is recommended to address the issue promptly to ensure the proper functioning of the right side assist step system.

5. What are some repair tips for fixing OBDII code B051D on a 2018 GMC Sierra?

Repair tips may include checking and repairing any damaged wiring or connectors, replacing the right side assist step position sensor if necessary, or resetting the system after making repairs.

6. Is it safe to attempt DIY repairs for OBDII code B051D on a 2018 GMC Sierra?

If you have the necessary tools and knowledge, some DIY repairs like checking and repairing wiring connections can be safely attempted. However, more complex issues may require professional assistance.

7. How can I reset the OBDII code B051D on my 2018 GMC Sierra after making repairs?

After addressing the underlying issue causing the code, you can reset the OBDII code using a diagnostic scanner or by disconnecting the vehicle's battery for a few minutes to clear the error code.

8. Are there any recalls or technical service bulletins related to OBDII code B051D on the 2018 GMC Sierra?

It's recommended to check with a GMC dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific OBDII code for your vehicle.

9. How much does it typically cost to repair OBDII code B051D on a 2018 GMC Sierra at a dealership or repair shop?

The cost of repairing this code can vary depending on the underlying issue, parts needed, and labor rates. It's advisable to get a diagnostic inspection and repair estimate from a trusted dealership or repair shop.

10. What long-term effects can OBDII code B051D have on the 2018 GMC Sierra if left unresolved?

Leaving this code unresolved could potentially lead to further damage to the right side assist step system, affecting its functionality and safety. It's best to address the issue promptly to avoid any long-term complications.