B051C:2A Code - Left Side Assist Step Position Sensor Circuit Too Many Pulses
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:2A indicates Left Side Assist Step Position Sensor Circuit Too Many Pulses.
- 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.
Code B051C:2A Description
What are the Possible Causes of the DTC B051C:2A?
- 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:2A?
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.
Code Tech Notes
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:2A 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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Frequently Asked Questions about B051C:2A Code
1. What does the OBDII code B051C:2A mean?
This code indicates that the Left Side Assist Step Position Sensor is sending too many pulses, which suggests an issue with the sensor's operation or the step's movement.
2. What are the common symptoms of code B051C:2A?
Symptoms may include the left assist step not deploying or retracting properly, unusual noises during operation, or a warning light or message on the dashboard.
3. What causes the B051C:2A code to appear?
Possible causes include a faulty position sensor, wiring issues, debris obstructing the assist step, or a malfunction in the step motor or control module.
4. How can I diagnose the B051C:2A code?
Start by inspecting the assist step for physical obstructions or damage, check the wiring and connectors for corrosion or disconnection, and test the position sensor for proper functionality.
5. Can a dirty or obstructed assist step trigger the B051C:2A code?
Yes, debris or dirt can interfere with the step's movement, causing the sensor to register too many pulses.
6. Is it safe to drive with the B051C:2A code active?
Yes, it’s generally safe to drive, but the assist step may not function correctly, posing a convenience issue when entering or exiting the vehicle.
7. How do I fix the B051C:2A code?
Repairs may include cleaning the assist step mechanism, repairing or replacing damaged wiring, replacing the position sensor, or recalibrating the system.
8. How much does it cost to fix the B051C:2A code?
Costs vary depending on the issue, but replacing a position sensor typically ranges from $100 to $300, including parts and labor.
9. Can I reset the B051C:2A code without repairing it?
You can clear the code with an OBDII scanner, but if the issue isn’t resolved, the code will likely return.
10. What tools are needed to troubleshoot the B051C:2A code?
You’ll need an OBDII scanner, a multimeter to check electrical connections, and basic tools to access and inspect the assist step mechanism.
Discuss the causes and fixes for B051C:2A OBDII Code
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