AutoCodes – Generic – B051C:62

B051C:62 Code - Left Side Assist Step Position Sensor Circuit Actuator Stuck Open

Q: 1. What does the OBDII code B051C:62 mean?

The code B051C:62 indicates an issue with the Left Side Assist Step Position Sensor Circuit, specifically that the actuator is stuck in the open position.

Q: 2. What are common symptoms of the B051C:62 code?

Symptoms may include the left side assist step not deploying or retracting properly, a warning light on the dashboard, or a noticeable malfunction in the step's movement.

Q: 3. What causes the B051C:62 code to appear?

Common causes include a faulty position sensor, a stuck actuator, wiring or connector issues, or physical obstructions in the assist step mechanism.

Q: 4. Can I still drive my vehicle with the B051C:62 code?

Yes, you can still drive the vehicle, but the assist step may not function properly, which could pose a safety risk when entering or exiting the vehicle.

Q: 5. How can I diagnose the B051C:62 code?

Start by visually inspecting the assist step for physical obstructions, checking the wiring and connectors for damage, and using a diagnostic scanner to confirm the sensor or actuator fault.

Q: 6. How do I fix the B051C:62 code?

Repairs may involve cleaning or freeing the stuck actuator, replacing the position sensor, repairing damaged wiring, or recalibrating the step mechanism.

Q: 7. What tools are needed to fix the B051C:62 code?

Basic tools like a multimeter to test electrical connections, a diagnostic scanner, and possibly replacement parts for the sensor or actuator will be needed.

Q: 8. How much does it cost to repair the B051C:62 code?

Repair costs can range from $100 to $500 depending on whether the issue is a simple wiring repair or requires replacing the actuator or sensor.

Q: 9. Can a software update fix the B051C:62 code?

In some cases, a software update or recalibration of the assist step system may resolve the issue if it is related to a programming fault.

Q: 10. What should I do if the B051C:62 code keeps coming back after repairs?

If the code persists, recheck all repairs for accuracy, inspect the system for hidden damage, and consider consulting a professional mechanic for advanced diagnostics.

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:62 indicates Left Side Assist Step Position Sensor Circuit Actuator Stuck Open.
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 597

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:62 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. The Diagnostic Trouble Code (DTC) will be set when the running board stow time is greater than 4 s.

OBDII Code B051C:62 - Left Side Assist Step Position Sensor Circuit Actuator Stuck Open - AutoCodes.com — B051C:62 Code - Left Side Assist Step Position Sensor Circuit Actuator Stuck Open

What does this mean?

What are the Possible Causes of the DTC B051C:62?

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:62?

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:62 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.

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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:62 Code

1. What does the OBDII code B051C:62 mean?

The code B051C:62 indicates an issue with the Left Side Assist Step Position Sensor Circuit, specifically that the actuator is stuck in the open position.

2. What are common symptoms of the B051C:62 code?

Symptoms may include the left side assist step not deploying or retracting properly, a warning light on the dashboard, or a noticeable malfunction in the step's movement.

3. What causes the B051C:62 code to appear?

Common causes include a faulty position sensor, a stuck actuator, wiring or connector issues, or physical obstructions in the assist step mechanism.

4. Can I still drive my vehicle with the B051C:62 code?

Yes, you can still drive the vehicle, but the assist step may not function properly, which could pose a safety risk when entering or exiting the vehicle.

5. How can I diagnose the B051C:62 code?

Start by visually inspecting the assist step for physical obstructions, checking the wiring and connectors for damage, and using a diagnostic scanner to confirm the sensor or actuator fault.

6. How do I fix the B051C:62 code?

Repairs may involve cleaning or freeing the stuck actuator, replacing the position sensor, repairing damaged wiring, or recalibrating the step mechanism.

7. What tools are needed to fix the B051C:62 code?

Basic tools like a multimeter to test electrical connections, a diagnostic scanner, and possibly replacement parts for the sensor or actuator will be needed.

8. How much does it cost to repair the B051C:62 code?

Repair costs can range from $100 to $500 depending on whether the issue is a simple wiring repair or requires replacing the actuator or sensor.

9. Can a software update fix the B051C:62 code?

In some cases, a software update or recalibration of the assist step system may resolve the issue if it is related to a programming fault.

10. What should I do if the B051C:62 code keeps coming back after repairs?

If the code persists, recheck all repairs for accuracy, inspect the system for hidden damage, and consider consulting a professional mechanic for advanced diagnostics.