B3930:04 Code - Child Security Lock Motors Circuit Open
Quick Answer
The B3930:04 diagnostic trouble code (DTC) indicates that there is an issue with the child security lock motors circuit being open. Common causes include Faulty child security lock motors, Wiring issues or shorts in the child security lock circuit, Corrosion or damage to the electrical connectors related to the child security locks. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B3930:04 indicates Child Security Lock Motors Circuit Open.
- Common causes
- Common causes include Faulty child security lock motors, Wiring issues or shorts in the child security lock circuit, Corrosion or damage to the electrical connectors related to the child security locks.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code B3930:04 Description
The B3930:04 diagnostic trouble code (DTC) indicates that there is an issue with the child security lock motors circuit being open. In vehicles equipped with child security locks, these locks prevent the rear doors from being opened from the inside, providing additional safety for children in the back seats. When the child security lock motors circuit is open, it means that there is a problem with the electrical circuit that controls these locks.
Common Causes of B3930:04
- Faulty child security lock motors.
- Wiring issues or shorts in the child security lock circuit.
- Corrosion or damage to the electrical connectors related to the child security locks.
- Issues with the vehicle's body control module (BCM) responsible for controlling the child security locks.
- Water or moisture intrusion causing damage to the child security lock components.
Symptoms of B3930:04
- Child security locks not engaging or disengaging properly.
- Warning light on the dashboard indicating a child security lock system fault.
- Rear doors can be opened from the inside when child security locks should be active.
- Unusual clicking or buzzing noises coming from the rear doors when locking or unlocking the vehicle.
How to Fix B3930:04
- Diagnose the issue using a scan tool to confirm the B3930:04 code and identify the specific cause of the problem.
- Inspect the child security lock motors, wiring, and connectors for any visible signs of damage or corrosion.
- Test the child security lock motors and circuit for proper functionality using a multimeter to measure voltage and continuity.
- Replace any faulty child security lock motors, repair damaged wiring or connectors, and clear the DTC from the vehicle's computer.
- Perform a final test to ensure that the child security locks are engaging and disengaging correctly before returning the vehicle to service.
Cost to Fix B3930:04
The typical repair costs for addressing the B3930:04 code can vary depending on the specific cause of the issue and the labor rates in your area. In general, repairing the child security lock motors circuit open fault may cost between $100 and $300, including parts and labor. However, the actual cost could be higher if more extensive repairs or component replacements are necessary. It's advisable to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on your vehicle's make and model. Keep in mind that labor rates can vary significantly, so it's essential to shop around and compare prices before committing to any repairs.
Need more information about the B3930:04 code?
Need more information on how to fix the B3930:04 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B3930:04 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B3930:04 Code
1. What does OBDII code B3930:04 mean?
B3930:04 indicates an open circuit in the child security lock motors, which control the electronic child safety locks on vehicle doors.
2. What are common symptoms of code B3930:04?
Symptoms include child safety locks failing to engage or disengage, or no response when activating the lock feature from the control switch.
3. What causes code B3930:04?
Common causes include damaged wiring or connectors to the child safety lock motors, a faulty motor, or issues with the control module.
4. Can I still drive my car with code B3930:04?
Yes, but the child safety locks may not function properly, potentially compromising passenger safety for children in the vehicle.
5. How do I diagnose code B3930:04?
Inspect wiring and connectors for damage, test the child safety lock motors for functionality, and check for faults in the control module.
6. How can I fix code B3930:04?
Repairs may involve replacing damaged wiring, repairing connectors, or replacing a faulty child safety lock motor or control module.
7. Is code B3930:04 a serious issue?
While it doesn't affect the drivability of the vehicle, it is important to address for the safety of child passengers.
8. Can a blown fuse cause code B3930:04?
Yes, a blown fuse in the circuit related to the child safety lock motors could trigger this code.
9. Will resetting the code fix B3930:04?
Resetting the code may clear it temporarily, but the underlying issue must be repaired to prevent the code from returning.
10. How much does it cost to repair code B3930:04?
Repair costs vary depending on whether the issue is with wiring, connectors, the motor, or the control module. Labor and parts costs typically range from $50 to $300.
Discuss the causes and fixes for B3930:04 OBDII Code
Code B3930:04 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.