AutoCodes – Cadillac – B1379 Cadillac

B1379 Cadillac Code - Ignition 3 Fault

Quick Answer

The Diagnostic Trouble Code (DTC) B1379 will set if IGNITION 3 is not active after IGNITION 1 has been active for 20 seconds. Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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: B1379 Cadillac indicates Ignition 3 Fault.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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.

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Code Popularity 874

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1379 Cadillac Description

The Diagnostic Trouble Code (DTC) B1379 will set if IGNITION 3 is not active after IGNITION 1 has been active for 20 seconds. When DTC is present, SERVICE VEHICLE SOON indicator illuminates and check gauges chime will sound. A current DTC B1379 will clear when the fault is no longer present and the ignition switch is cycled. A history DTC B1379 clears when module ignition cycle counter reaches reset threshold, without a repeat of malfunction.

OBDII Code B1379 Cadillac - Ignition 3 Fault - AutoCodes.com — B1379 Cadillac Code - Ignition 3 Fault

What does this mean?

What are the Possible Causes of the DTC B1379 Cadillac?

Faulty Body Control Module (BCM)
Body Control Module (BCM) harness is open or shorted
Body Control Module (BCM) circuit poor electrical connection
Faulty Instrument Panel Cluster (IPC)

How to Fix the DTC B1379 Cadillac?

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 B1379 Cadillac 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 B1379 Cadillac code?

Need more information on how to fix the B1379 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1379 Cadillac 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 B1379 Cadillac Code

1. What are the common symptoms of OBDII code B1379 Cadillac (Ignition 3 Fault)?

The common symptoms of OBDII code B1379 Cadillac (Ignition 3 Fault) include engine misfires, rough idling, stalling, and issues with starting the vehicle.

2. What can cause the OBDII code B1379 Cadillac (Ignition 3 Fault) to trigger?

The OBDII code B1379 Cadillac (Ignition 3 Fault) can be triggered by a faulty ignition coil, wiring issues, or problems with the ignition control module.

3. How can I diagnose the OBDII code B1379 Cadillac (Ignition 3 Fault)?

Diagnosing the OBDII code B1379 Cadillac (Ignition 3 Fault) involves using a diagnostic scanner to retrieve the code, inspecting the ignition system components, and testing the ignition coil and related wiring for proper functioning.

4. What are some repair tips for fixing OBDII code B1379 Cadillac (Ignition 3 Fault)?

Repair tips for fixing OBDII code B1379 Cadillac (Ignition 3 Fault) may include checking and replacing the faulty ignition coil, repairing any damaged wiring, and ensuring proper connection of the ignition control module.

5. Can I drive my vehicle with the OBDII code B1379 Cadillac (Ignition 3 Fault) active?

It is not recommended to drive your vehicle with the OBDII code B1379 Cadillac (Ignition 3 Fault) active, as it can lead to further damage to the engine and affect the overall performance of the vehicle.

6. How much does it cost to repair OBDII code B1379 Cadillac (Ignition 3 Fault)?

The cost to repair OBDII code B1379 Cadillac (Ignition 3 Fault) can vary depending on the specific issue causing the code, but it may range from $100 to $500 or more, including parts and labor.

7. Are there any preventive measures to avoid OBDII code B1379 Cadillac (Ignition 3 Fault)?

Regular maintenance of the ignition system, such as timely replacement of spark plugs and ignition coils, can help prevent issues that may trigger OBDII code B1379 Cadillac (Ignition 3 Fault).

8. Can a DIY enthusiast fix OBDII code B1379 Cadillac (Ignition 3 Fault)?

While some DIY enthusiasts may be able to diagnose and repair OBDII code B1379 Cadillac (Ignition 3 Fault) if they have the necessary tools and knowledge, it is recommended to seek professional help for accurate diagnosis and repair.

9. How long does it take to repair OBDII code B1379 Cadillac (Ignition 3 Fault)?

The repair time for OBDII code B1379 Cadillac (Ignition 3 Fault) can vary depending on the underlying issue, but it may take anywhere from one to three hours at a repair shop.

10. Will resetting the OBDII system clear the B1379 Cadillac (Ignition 3 Fault) code?

Resetting the OBDII system may temporarily clear the B1379 Cadillac (Ignition 3 Fault) code, but if the underlying issue is not fixed, the code is likely to reappear. It is recommended to diagnose and repair the root cause of the code.