AutoCodes – Chevrolet – B3930 2018 Chevrolet Silverado

B3930 2018 Chevrolet Silverado Code - Child Security Lock Motors Circuit

Quick Answer

The Body Control Module (BCM) controls the Child Security Lock Relay when it receives a command to lockout the rear doors. Common causes include Faulty Child Security Lock Relay, Child Security Lock Relay harness is open or shorted, Child Security Lock Relay circuit poor electrical connection. 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 2018 Chevrolet Silverado indicates Child Security Lock Motors Circuit.
Common causes
Common causes include Faulty Child Security Lock Relay, Child Security Lock Relay harness is open or shorted, Child Security Lock Relay circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 176
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 17, 2023
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Code B3930 2018 Chevrolet Silverado Description

The Body Control Module (BCM) controls the Child Security Lock Relay when it receives a command to lockout the rear doors. The relay will apply voltage to both child security circuits at the rear door latches to disable the interior door handles. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to voltage, short to ground or an open/high resistance on the child security lock disable relay control circuit.
OBDII Code B3930 2018 Chevrolet Silverado - Child Security Lock Motors Circuit - AutoCodes.com
B3930 2018 Chevrolet Silverado Code - Child Security Lock Motors Circuit

What are the Possible Causes of the DTC B3930 2018 Chevrolet Silverado?

  • Faulty Child Security Lock Relay
  • Child Security Lock Relay harness is open or shorted
  • Child Security Lock Relay circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B3930 2018 Chevrolet Silverado?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3930 2018 Chevrolet Silverado 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.

Need more information about the B3930 2018 Chevrolet Silverado code?

Need more information on how to fix the B3930 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3930 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 2018 Chevrolet Silverado Code

1. What does OBDII code B3930 for the Child Security Lock Motors Circuit mean?

The B3930 code indicates a malfunction in the circuit responsible for controlling the child security lock motors in a 2018 Chevrolet Silverado.

2. What are the common symptoms of OBDII code B3930 in a 2018 Chevrolet Silverado?

Common symptoms of code B3930 may include malfunctioning child security locks, inability to engage or disengage child locks electronically, and illuminated warning lights on the dashboard.

3. What can cause OBDII code B3930 to trigger in a 2018 Chevrolet Silverado?

Possible causes of code B3930 include faulty child lock motors, damaged wiring or connectors in the circuit, a blown fuse, or a problem with the control module.

4. How can I diagnose OBDII code B3930 in my 2018 Chevrolet Silverado?

Diagnosing code B3930 typically involves inspecting the child security lock motors, checking the wiring and connectors for damage, testing the fuses related to the circuit, and using a diagnostic scanner to pinpoint the exact issue.

5. Are there any simple repairs I can try for OBDII code B3930 in my 2018 Chevrolet Silverado?

Simple repairs for code B3930 may include checking and replacing blown fuses, repairing damaged wiring or connectors, and ensuring the child lock motors are functioning properly.

6. Can I drive my 2018 Chevrolet Silverado with OBDII code B3930?

It is generally safe to drive with code B3930, but it is recommended to address the issue promptly to ensure the child security lock system functions correctly in case of an emergency.

7. How much does it cost to repair OBDII code B3930 in a 2018 Chevrolet Silverado?

The cost of repairing code B3930 can vary depending on the exact cause of the issue, but it may range from a simple fuse replacement to more extensive repairs involving the child lock motors or wiring.

8. Is OBDII code B3930 a common problem in 2018 Chevrolet Silverado vehicles?

While not extremely common, issues with the child security lock motors circuit, resulting in code B3930, can occur in 2018 Chevrolet Silverado vehicles due to various factors like wear and tear or electrical faults.

9. Can I reset OBDII code B3930 in my 2018 Chevrolet Silverado without repairs?

Resetting the code without addressing the underlying issue may temporarily turn off the warning light, but the problem will likely reoccur until the root cause is resolved.

10. How can I prevent OBDII code B3930 from appearing in my 2018 Chevrolet Silverado?

To prevent code B3930, regular maintenance checks, including inspecting the child lock system and associated wiring, can help identify potential issues early and prevent the code from triggering.

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