B051B:04 Code - Right Side Assist Step Motor Control Circuit Open Circuit
Quick Answer
The B051B:04 diagnostic trouble code (DTC) indicates a problem with the right side assist step motor control circuit being open. Common causes include Damaged wiring or connectors in the right side assist step motor control circuit, Faulty right side assist step motor, Corrosion or moisture intrusion in the electrical connections. 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
- B051B:04 indicates Right Side Assist Step Motor Control Circuit Open Circuit.
- Common causes
- Common causes include Damaged wiring or connectors in the right side assist step motor control circuit, Faulty right side assist step motor, Corrosion or moisture intrusion in the electrical connections.
- 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 B051B:04 Description
The B051B:04 diagnostic trouble code (DTC) indicates a problem with the right side assist step motor control circuit being open. In vehicles equipped with power running boards or assist steps, this code specifically points to an issue with the motor control circuit on the right side. The assist step motor control circuit is responsible for controlling the deployment and retraction of the assist steps when the vehicle doors are opened or closed.
Common Causes of B051B:04
- Damaged wiring or connectors in the right side assist step motor control circuit.
- Faulty right side assist step motor.
- Corrosion or moisture intrusion in the electrical connections.
- Issues with the control module responsible for managing the assist step system.
Symptoms of B051B:04
- Right side assist step fails to deploy or retract.
- Unusual noises coming from the right side assist step motor.
- Warning light on the dashboard indicating an issue with the assist step system.
- Difficulty in entering or exiting the vehicle due to the inoperable assist step.
How to Fix B051B:04
- Begin by inspecting the wiring and connectors in the right side assist step motor control circuit for any visible damage or corrosion.
- Test the right side assist step motor to determine if it is functioning correctly or needs replacement.
- Check the control module for any faults or errors that may be affecting the operation of the assist step system.
- Repair or replace any damaged wiring, connectors, or components in the right side assist step motor control circuit.
- Clear the DTC and test the assist step system to ensure proper operation.
Cost to Fix B051B:04
The typical repair costs for addressing a B051B:04 code can vary depending on the extent of the issue and the specific components that require repair or replacement. In general, the cost of parts for this repair may range from $100 to $300, while labor costs can add an additional $100 to $200. Overall, the total repair cost for resolving this issue could fall within the range of $200 to $500. However, it's important to note that actual repair costs may differ based on factors such as the vehicle make and model, the location of the repair shop, and any additional diagnostic or labor charges. It's recommended to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on the specific circumstances.
Tech Notes for B051B:04
B051B:01 Right Side Assist Step Motor Control Circuit Short to Battery
B051B:02 Right Side Assist Step Motor Control Circuit Short to Ground
B051B:04 Right Side Assist Step Motor Control Circuit Open Circuit
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Frequently Asked Questions about B051B:04 Code
1. What does the OBDII code B051B:04 mean?
The code B051B:04 indicates an open circuit in the right side assist step motor control circuit, meaning there is a disruption in the electrical connection to the motor controlling the right assist step.
2. What are common symptoms of the B051B:04 code?
Symptoms include the right side assist step not deploying or retracting, warning messages or lights on the dashboard, and an audible clicking or no movement from the assist step motor.
3. What causes the B051B:04 code to appear?
Common causes include damaged or corroded wiring, a faulty assist step motor, a disconnected connector, or a malfunctioning control module.
4. Can I still drive my vehicle with the B051B:04 code?
Yes, the vehicle can still be driven. However, the right side assist step may not function properly, which could be inconvenient or pose a safety risk when entering or exiting the vehicle.
5. How do I diagnose the B051B:04 code?
Start by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to check for continuity in the circuit and test the functionality of the right assist step motor.
6. How do I fix the B051B:04 code?
Repairs may include repairing or replacing damaged wiring, reconnecting loose connectors, replacing the right assist step motor, or resetting the control module if needed.
7. How much does it cost to repair the B051B:04 code?
The cost varies depending on the cause, but replacing a motor can cost $200–$500, while wiring repairs typically cost less. Labor charges depend on the shop.
8. Can I clear the B051B:04 code without fixing the problem?
Clearing the code without addressing the issue will only temporarily remove it. The code will likely return if the underlying problem isn't resolved.
9. Is the B051B:04 code specific to certain vehicle makes or models?
This code is more commonly found in vehicles equipped with power-deployable side assist steps, such as certain trucks or SUVs.
10. How can I prevent the B051B:04 code from occurring?
Regularly inspect the assist step mechanism for dirt or debris, ensure wiring and connectors are clean and secure, and address any electrical issues promptly.
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