AutoCodes – Generic – B051C:22

B051C:22 Code - Left Side Assist Step Position Sensor Circuit Too Short Low Time

Q: What does the OBDII code B051C:22 mean?

The code B051C:22 indicates a problem with the Left Side Assist Step Position Sensor Circuit, specifically that it has a too short low time, suggesting a signal or electrical fault.

Q: What are the symptoms of code B051C:22?

Symptoms may include the left side assist step not deploying or retracting properly, intermittent operation, or being stuck in one position.

Q: What causes the code B051C:22 to appear?

Common causes include a faulty position sensor, damaged wiring or connectors, electrical short circuits, or issues with the assist step motor.

Q: Can I still drive my vehicle with code B051C:22?

Yes, the vehicle is typically still drivable, but the left side assist step may not function correctly, potentially affecting convenience and safety during entry or exit.

Q: How can I diagnose the code B051C:22?

Begin by visually inspecting the position sensor, wiring, and connectors for damage. Use a multimeter to test for electrical continuity and check for proper sensor operation using a scan tool.

Q: How do I fix the code B051C:22?

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

Q: Is it safe to ignore code B051C:22?

Ignoring this code may lead to further damage to the assist step system and compromise convenience or safety during vehicle use.

Q: What tools are needed to troubleshoot code B051C:22?

You may need a multimeter, wiring diagrams, a scan tool capable of reading live data, and basic hand tools for repairs.

Q: Does code B051C:22 require professional repair?

While some repairs can be DIY if you're familiar with automotive electrical systems, complex diagnostics or motor issues may require professional assistance.

Q: How much does it cost to fix code B051C:22?

Repair costs vary but could range from $100 to $500, depending on whether parts like the sensor or motor need to be replaced and labor costs.

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:22 indicates Left Side Assist Step Position Sensor Circuit Too Short Low Time.
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 288

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:22 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 hall sensor signal is noisy.

OBDII Code B051C:22 - Left Side Assist Step Position Sensor Circuit Too Short Low Time - AutoCodes.com — B051C:22 Code - Left Side Assist Step Position Sensor Circuit Too Short Low Time

What does this mean?

What are the Possible Causes of the DTC B051C:22?

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:22?

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:22 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:22 code?

Need more information on how to fix the B051C:22 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B051C:22 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:22 Code

What does the OBDII code B051C:22 mean?

The code B051C:22 indicates a problem with the Left Side Assist Step Position Sensor Circuit, specifically that it has a too short low time, suggesting a signal or electrical fault.

What are the symptoms of code B051C:22?

Symptoms may include the left side assist step not deploying or retracting properly, intermittent operation, or being stuck in one position.

What causes the code B051C:22 to appear?

Common causes include a faulty position sensor, damaged wiring or connectors, electrical short circuits, or issues with the assist step motor.

Can I still drive my vehicle with code B051C:22?

Yes, the vehicle is typically still drivable, but the left side assist step may not function correctly, potentially affecting convenience and safety during entry or exit.

How can I diagnose the code B051C:22?

Begin by visually inspecting the position sensor, wiring, and connectors for damage. Use a multimeter to test for electrical continuity and check for proper sensor operation using a scan tool.

How do I fix the code B051C:22?

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

Is it safe to ignore code B051C:22?

Ignoring this code may lead to further damage to the assist step system and compromise convenience or safety during vehicle use.

What tools are needed to troubleshoot code B051C:22?

You may need a multimeter, wiring diagrams, a scan tool capable of reading live data, and basic hand tools for repairs.

Does code B051C:22 require professional repair?

While some repairs can be DIY if you're familiar with automotive electrical systems, complex diagnostics or motor issues may require professional assistance.

How much does it cost to fix code B051C:22?

Repair costs vary but could range from $100 to $500, depending on whether parts like the sensor or motor need to be replaced and labor costs.