B051C 2016 GMC Sierra Code - Left Side Assist Step Position Sensor Circuit
Quick Answer
The B051C diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Left Side Assist Step Position Sensor Circuit. Common causes include Faulty left side assist step position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or moisture intrusion affecting the sensor components. 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 2016 GMC Sierra indicates Left Side Assist Step Position Sensor Circuit.
- Common causes
- Common causes include Faulty left side assist step position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or moisture intrusion affecting the sensor components.
- 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 B051C 2016 GMC Sierra Description
The B051C diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Left Side Assist Step Position Sensor Circuit. This code indicates a problem with the sensor that monitors the position of the left side assist step on the vehicle. The assist step is a motorized or retractable step that extends when the door is opened to help passengers enter and exit the vehicle more easily. The position sensor ensures that the step deploys and retracts properly, enhancing convenience and safety for occupants.
Common Causes of B051C 2016 GMC Sierra
- Faulty left side assist step position sensor.
- Damaged wiring or connectors in the sensor circuit.
- Corrosion or moisture intrusion affecting the sensor components.
- Defective control module responsible for managing the assist step operation.
- Physical damage to the assist step mechanism impacting sensor function.
Symptoms of B051C 2016 GMC Sierra
- Left side assist step fails to deploy or retract when the door is opened or closed.
- Unusual noises coming from the left side of the vehicle when the assist step is in operation.
- Warning light on the dashboard indicating a problem with the assist step system.
- Difficulty entering or exiting the vehicle due to the non-functioning assist step.
How to Fix B051C 2016 GMC Sierra
- Diagnose the issue by using a scan tool to retrieve the specific DTC and pinpoint the exact cause of the problem.
- Inspect the wiring, connectors, and sensor components for any signs of damage, corrosion, or loose connections.
- Test the left side assist step position sensor for proper functionality and replace if necessary.
- Check the control module for any faults or errors and replace if needed.
- Clear the DTC from the vehicle's computer memory and test the assist step to ensure it deploys and retracts correctly.
Cost to Fix B051C 2016 GMC Sierra
The cost of repairing a Left Side Assist Step Position Sensor Circuit issue on a 2016 GMC Sierra can vary depending on the specific cause of the problem and the labor rates in your area. Generally, the parts for this repair could range from $100 to $300, while labor costs may be between $100 and $200. Keep in mind that these are rough estimates, and actual costs may differ based on the extent of the damage and the rates charged by your chosen auto repair shop. It's recommended to obtain quotes from multiple shops to compare prices and ensure you're getting a fair deal.
Tech Notes for B051C 2016 GMC Sierra
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
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Frequently Asked Questions about B051C 2016 GMC Sierra Code
What does the OBDII code B051C mean for a 2016 GMC Sierra?
The code B051C indicates an issue with the Left Side Assist Step Position Sensor Circuit, which monitors the deployment and retraction of the left side power running board.
What are the common symptoms of code B051C in a 2016 GMC Sierra?
Symptoms may include the left side assist step not deploying or retracting properly, a warning message on the dashboard, or the assist step being stuck in one position.
What causes the B051C code to appear?
Common causes include a faulty position sensor, damaged wiring or connectors in the assist step circuit, or a malfunctioning control module.
How can I diagnose the B051C code?
Start by inspecting the wiring and connectors for damage or corrosion. Use a scan tool to check the position sensor readings and verify proper operation of the assist step system.
Can I still drive my 2016 GMC Sierra with the B051C code?
Yes, the vehicle is still drivable, but the assist step may not function as intended, which can reduce convenience and accessibility.
How do I reset the B051C code after repairs?
After fixing the issue, use an OBDII scan tool to clear the code. If the problem persists, the code may reappear, indicating further diagnosis is needed.
What tools do I need to repair the B051C code?
You’ll need a multimeter to test electrical connections, an OBDII scanner to read and clear the code, and basic tools to access the assist step components.
How much does it cost to fix the B051C code?
Repair costs can vary depending on the issue. Replacing a faulty sensor may cost $100–$300, while wiring repairs could be less. Labor costs depend on the shop.
Can a dirty or obstructed assist step cause the B051C code?
Yes, dirt, debris, or physical obstructions can prevent the assist step from moving properly, potentially triggering the code. Inspect and clean the step as needed.
Should I replace the assist step position sensor if I get code B051C?
Not necessarily. First, inspect the wiring and connections for damage. Only replace the sensor if testing confirms it is faulty.
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