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B3930 2014 Chevrolet Silverado Code - Child Security Lock Motors Circuit

Quick Answer

The B3930 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado relates to the Child Security Lock Motors Circuit. Common causes include Faulty child security lock motors, Wiring issues, such as shorts or open circuits, Malfunctioning control module. 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 2014 Chevrolet Silverado indicates Child Security Lock Motors Circuit.
Common causes
Common causes include Faulty child security lock motors, Wiring issues, such as shorts or open circuits, Malfunctioning control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code B3930 2014 Chevrolet Silverado Description

The B3930 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado relates to the Child Security Lock Motors Circuit. This code indicates a malfunction in the circuit responsible for controlling the child security lock motors in the vehicle. The child security lock system is designed to prevent the rear doors from being opened from the inside, providing an additional level of safety for passengers, especially children. When this circuit malfunctions, it can lead to issues with the proper operation of the child security locks, potentially compromising the safety of passengers.

OBDII Code B3930 2014 Chevrolet Silverado - Child Security Lock Motors Circuit
B3930 2014 Chevrolet Silverado Code - Child Security Lock Motors Circuit

Common Causes of B3930 2014 Chevrolet Silverado

  1. Faulty child security lock motors.
  2. Wiring issues, such as shorts or open circuits.
  3. Malfunctioning control module.
  4. Corrosion or damage to electrical connections.
  5. Physical obstructions preventing the proper operation of the child security lock system.

Symptoms of B3930 2014 Chevrolet Silverado

  1. Inability to engage or disengage the child security locks.
  2. The child security lock indicator light on the dashboard may illuminate.
  3. Rear doors may be able to be opened from the inside while the child security locks are supposed to be engaged.
  4. Audible clicking or grinding noises when attempting to activate the child security locks.

How to Fix B3930 2014 Chevrolet Silverado

  1. Begin by conducting a thorough visual inspection of the child security lock system, checking for any obvious signs of damage or wear.
  2. Use a multimeter to test the continuity of the wiring in the circuit, ensuring that there are no shorts or open circuits.
  3. Test the child security lock motors for proper operation by applying power directly to them and observing their movement.
  4. If the motors are faulty, replace them with new units.
  5. If the wiring and motors are in good condition, consider testing or replacing the control module responsible for managing the child security lock system.

Cost to Fix B3930 2014 Chevrolet Silverado

The cost of repairing the Child Security Lock Motors Circuit issue can vary depending on the specific cause of the problem and the labor rates in your area. In general, replacing faulty child security lock motors can cost between $100 and $300 per motor, while replacing a control module can range from $200 to $500. Wiring repairs or replacements may add additional costs, depending on the extent of the damage. Overall, you can expect to pay anywhere from $300 to $1000 for parts and labor to address this issue. It's advisable to consult with a qualified mechanic or dealership to get a more accurate estimate based on your vehicle's specific needs.

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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 B3930 2014 Chevrolet Silverado Code

1. What does the OBDII code B3930 mean on a 2014 Chevrolet Silverado?

Code B3930 indicates an issue with the Child Security Lock Motors Circuit, which controls the electronic child safety locks on the rear doors.

2. What are common symptoms of code B3930 on a 2014 Chevrolet Silverado?

Symptoms may include rear door child locks not engaging or disengaging properly, or a warning light on the dashboard.

3. What causes the B3930 code on a 2014 Chevrolet Silverado?

Common causes include faulty child security lock motors, damaged wiring or connectors, or issues with the body control module (BCM).

4. How do you diagnose the B3930 code on a 2014 Chevrolet Silverado?

Start by visually inspecting the wiring and connectors for damage, then test the child lock motors and check for BCM-related faults using a diagnostic tool.

5. Can a faulty body control module cause the B3930 code?

Yes, a malfunctioning BCM may fail to send or interpret signals to the child security lock motors, resulting in this code.

6. Is it safe to drive with the B3930 code on a 2014 Chevrolet Silverado?

While the vehicle is generally safe to drive, the child safety locks may not function properly, which could pose risks for rear passengers, especially children.

7. How can you fix the B3930 code on a 2014 Chevrolet Silverado?

Repairs may include replacing the faulty child security lock motors, repairing damaged wiring or connectors, or reprogramming or replacing the BCM.

8. How much does it typically cost to fix the B3930 code on a 2014 Chevrolet Silverado?

Repair costs can range from $100 to $500, depending on whether the issue is with the lock motors, wiring, or BCM.

9. Can a discharged battery cause the B3930 code?

Yes, a weak or discharged battery may lead to electrical issues that could trigger this code, though it’s not a common cause.

10. Do you need to reprogram the BCM after fixing the B3930 code?

If the BCM is replaced or updated, it may require reprogramming to ensure proper communication with other vehicle systems.

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