AutoCodes – Cadillac – B051C Cadillac

B051C Cadillac Code - Left Side Assist Step Position Sensor Circuit

Q: 1. What are the common symptoms of OBDII code B051C Cadillac?

Common symptoms include malfunctioning left side assist step, warning lights on the dashboard, and difficulty deploying or retracting the assist step.

Q: 2. What does the OBDII code B051C Cadillac indicate?

This code refers to a fault in the left side assist step position sensor circuit, which monitors the position of the assist step for proper operation.

Q: 3. What are the possible causes of OBDII code B051C Cadillac?

Possible causes include a faulty position sensor, damaged wiring or connectors in the circuit, or issues with the assist step motor.

Q: 4. How can I diagnose the cause of OBDII code B051C Cadillac?

Diagnosis typically involves inspecting the wiring and connectors for damage, testing the position sensor for proper function, and checking the assist step motor for any issues.

Q: 5. Can I still drive my Cadillac with OBDII code B051C present?

While it may be possible to drive the vehicle with this code present, it is recommended to address the issue promptly to ensure the proper functioning of the left side assist step.

Q: 6. How can I repair OBDII code B051C Cadillac?

Repair options may include replacing the faulty position sensor, repairing damaged wiring or connectors, or addressing any issues with the assist step motor.

Q: 7. Is it possible to clear OBDII code B051C Cadillac without fixing the underlying issue?

Clearing the code without addressing the underlying issue may temporarily remove the warning lights, but the problem will likely reoccur until properly repaired.

Q: 8. Can a DIY enthusiast fix OBDII code B051C Cadillac at home?

Depending on your skill level and access to tools, you may be able to diagnose and repair this code at home. However, if you are unsure, it is recommended to seek professional assistance.

Q: 9. How much does it typically cost to repair OBDII code B051C Cadillac?

The cost of repair can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $100 to $500, or more in some cases.

Q: 10. How important is it to address OBDII code B051C Cadillac promptly?

It is crucial to address this code promptly to ensure the proper functioning of the left side assist step, maintain vehicle safety, and prevent further damage to related components.

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 Cadillac 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,221

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B051C Cadillac 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 Cadillac - Left Side Assist Step Position Sensor Circuit - AutoCodes.com — B051C Cadillac Code - Left Side Assist Step Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B051C Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac code?

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

Need Help with the Code?

Get the B051C Cadillac 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 Cadillac Code

1. What are the common symptoms of OBDII code B051C Cadillac?

Common symptoms include malfunctioning left side assist step, warning lights on the dashboard, and difficulty deploying or retracting the assist step.

2. What does the OBDII code B051C Cadillac indicate?

This code refers to a fault in the left side assist step position sensor circuit, which monitors the position of the assist step for proper operation.

3. What are the possible causes of OBDII code B051C Cadillac?

Possible causes include a faulty position sensor, damaged wiring or connectors in the circuit, or issues with the assist step motor.

4. How can I diagnose the cause of OBDII code B051C Cadillac?

Diagnosis typically involves inspecting the wiring and connectors for damage, testing the position sensor for proper function, and checking the assist step motor for any issues.

5. Can I still drive my Cadillac with OBDII code B051C present?

While it may be possible to drive the vehicle with this code present, it is recommended to address the issue promptly to ensure the proper functioning of the left side assist step.

6. How can I repair OBDII code B051C Cadillac?

Repair options may include replacing the faulty position sensor, repairing damaged wiring or connectors, or addressing any issues with the assist step motor.

7. Is it possible to clear OBDII code B051C Cadillac without fixing the underlying issue?

Clearing the code without addressing the underlying issue may temporarily remove the warning lights, but the problem will likely reoccur until properly repaired.

8. Can a DIY enthusiast fix OBDII code B051C Cadillac at home?

Depending on your skill level and access to tools, you may be able to diagnose and repair this code at home. However, if you are unsure, it is recommended to seek professional assistance.

9. How much does it typically cost to repair OBDII code B051C Cadillac?

The cost of repair can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $100 to $500, or more in some cases.

10. How important is it to address OBDII code B051C Cadillac promptly?

It is crucial to address this code promptly to ensure the proper functioning of the left side assist step, maintain vehicle safety, and prevent further damage to related components.