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B1379 Chevrolet Code - Ignition 3 Fault

Quick Answer

The automotive diagnostic code B1379 Chevrolet refers to an "Ignition 3 Fault." This code is triggered when the Engine Control Unit (ECU) detects a fault or malfunction within the third ignition system of the vehicle. Common causes include Faulty or worn-out spark plugs, Damaged or malfunctioning ignition coils, Issues with the ignition 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
B1379 Chevrolet indicates Ignition 3 Fault.
Common causes
Common causes include Faulty or worn-out spark plugs, Damaged or malfunctioning ignition coils, Issues with the ignition 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 12, 2024
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Code B1379 Chevrolet Description

The automotive diagnostic code B1379 Chevrolet refers to an "Ignition 3 Fault." This code is triggered when the Engine Control Unit (ECU) detects a fault or malfunction within the third ignition system of the vehicle. Ignition system 3 is an integral part of the engine management system and plays a critical role in firing the spark plugs to ignite the air-fuel mixture inside the engine's cylinders.

OBDII Code B1379 Chevrolet - Ignition 3 Fault
B1379 Chevrolet Code - Ignition 3 Fault

Common Causes of B1379 Chevrolet

  1. Faulty or worn-out spark plugs
  2. Damaged or malfunctioning ignition coils
  3. Issues with the ignition control module
  4. Wiring or connection issues in ignition system 3
  5. Faulty ECU

Symptoms of B1379 Chevrolet

  1. Engine misfires or runs roughly
  2. Reduced power or poor acceleration
  3. Poor fuel economy
  4. Vehicle may fail to start
  5. Engine warning light is illuminated

How to Fix B1379 Chevrolet

  1. The first step in the repair process is to use a code reader or scanner to confirm the presence of the B1379 code.
  2. Inspect the spark plugs for signs of damage or wear and replace if necessary.
  3. Test the ignition coils for proper function. Replace any that are faulty.
  4. Check the ignition control module and associated wiring for damage or faults. Repair or replace as necessary.
  5. If all other components are functioning correctly, the ECU may be faulty and may need to be replaced or reprogrammed.

Cost to Fix B1379 Chevrolet

The cost of repairing a B1379 Chevrolet code can vary widely based on the specific cause of the problem. If the issue is due to faulty spark plugs or ignition coils, the repair cost might range from $100 to $300 for parts and labor. However, if the ignition control module or ECU is faulty, the repair cost could rise to $500 to $1000 or more. As labor rates can vary, it's recommended to check with local auto repair shops for a more precise estimate.

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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 B1379 Chevrolet Code

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

The common symptoms of code B1379 Chevrolet include engine misfires, difficulty starting the vehicle, and a noticeable drop in engine performance.

2. What can cause OBDII code B1379 Chevrolet to trigger?

Code B1379 Chevrolet (Ignition 3 Fault) is typically triggered by issues with the ignition system, such as a faulty ignition coil, spark plug, or wiring related to Ignition 3 circuit.

3. How can I diagnose the source of OBDII code B1379 Chevrolet?

To diagnose code B1379 Chevrolet, you can use an OBDII scanner to retrieve the specific fault code. Additionally, inspect the Ignition 3 circuit components for any visible damage or wear.

4. Can a DIY enthusiast repair OBDII code B1379 Chevrolet at home?

Repairing code B1379 Chevrolet may require advanced knowledge and tools. It is recommended to consult a professional mechanic to accurately diagnose and repair the issue related to the Ignition 3 circuit fault.

5. Are there any quick tips to troubleshoot OBDII code B1379 Chevrolet?

Quick troubleshooting tips for code B1379 Chevrolet include checking the ignition coil, spark plug, and wiring connections in the Ignition 3 circuit for any signs of damage or corrosion.

6. What is the potential risk of ignoring OBDII code B1379 Chevrolet?

Ignoring OBDII code B1379 Chevrolet can lead to further damage to the ignition system, reduced fuel efficiency, and potential engine misfires, which may result in costly repairs in the future.

7. Can a bad battery cause OBDII code B1379 Chevrolet to appear?

While a bad battery can cause various electrical issues in a vehicle, OBDII code B1379 Chevrolet is specifically related to faults in the Ignition 3 circuit, typically not directly caused by a bad battery.

8. How much does it cost to repair OBDII code B1379 Chevrolet at a repair shop?

The cost to repair code B1379 Chevrolet can vary depending on the extent of the issue and the labor rates of the repair shop. It is recommended to obtain quotes from multiple shops for an accurate estimate.

9. Is it safe to drive with OBDII code B1379 Chevrolet illuminated?

Driving with OBDII code B1379 Chevrolet illuminated is not recommended, as it can lead to potential engine performance issues and further damage to the ignition system. It is best to address the issue promptly.

10. Can resetting the OBDII system clear code B1379 Chevrolet permanently?

Resetting the OBDII system may temporarily clear code B1379 Chevrolet, but if the underlying issue with the Ignition 3 circuit is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the fault.

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