Engine-CodesChevrolet – B1405 Chevrolet

B1405 Chevrolet Code - Control Module Voltage Reference Output 2 Circuit

Quick Answer

The B1405 Chevrolet diagnostic trouble code refers to the Control Module Voltage Reference Output 2 Circuit. Common causes include Faulty control module, Wiring faults, Voltage regulator issues. 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
B1405 Chevrolet indicates Control Module Voltage Reference Output 2 Circuit.
Common causes
Common causes include Faulty control module, Wiring faults, Voltage regulator issues.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B1405 Chevrolet Description

The B1405 Chevrolet diagnostic trouble code refers to the Control Module Voltage Reference Output 2 Circuit. This code indicates that there is a problem with the control module's ability to provide a consistent voltage reference output to various components in the vehicle's electrical system. The control module is responsible for regulating and distributing voltage to different sensors, actuators, and modules throughout the vehicle. When this circuit malfunctions, it can lead to erratic behavior in these components, potentially affecting the vehicle's performance and overall functionality.

OBDII Code B1405 Chevrolet - Control Module Voltage Reference Output 2 Circuit
B1405 Chevrolet Code - Control Module Voltage Reference Output 2 Circuit

Common Causes of B1405 Chevrolet

  1. Faulty control module
  2. Wiring faults
  3. Voltage regulator issues
  4. Corrosion or loose connections in the electrical system
  5. Environmental factors such as moisture or heat affecting the components

Symptoms of B1405 Chevrolet

  1. Engine misfires
  2. Rough idling
  3. Stalling
  4. Poor fuel efficiency
  5. Difficulty starting the engine

How to Fix B1405 Chevrolet

  1. Diagnose the issue using a diagnostic scanner to pinpoint the exact cause of the code.
  2. Inspect the wiring harness and connections for any signs of damage, corrosion, or loose connections.
  3. Test the voltage regulator to ensure it is functioning correctly.
  4. If the control module is found to be faulty, replace it with a new one.
  5. Clear the trouble code from the vehicle's computer system and perform a test drive to ensure the issue has been resolved.

Cost to Fix B1405 Chevrolet

The typical repair costs for addressing the B1405 Chevrolet code can vary depending on the exact cause of the issue and the specific components that need to be replaced. In general, the cost of parts for this repair could range from $100 to $300, while labor costs may add an additional $100 to $200 to the total bill. Keep in mind that these estimates are rough averages, and actual costs can vary based on factors such as location, vehicle make and model, and the specific repair shop you choose. It's recommended to obtain quotes from multiple repair shops to compare prices and find the best deal for your specific situation.

Tech Notes for B1405 Chevrolet

B1405:02 Control Module Voltage Reference Output 2 Circuit Short to Ground

B1405:03 Control Module Voltage Reference Output 2 Circuit Low Voltage

B1405:07 Control Module Voltage Reference Output 2 Circuit High Voltage



If the B1405 code is stored in the Seat Memory Control Module, check the Seat Motor and Seat Memory Control Module.

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Information for Specific Chevrolet Models

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 B1405 Chevrolet Code

1. What does OBDII code B1405 for a Chevrolet Control Module Voltage Reference Output 2 Circuit mean?

This code indicates a problem with the voltage reference output circuit 2 in the control module of your Chevrolet vehicle.

2. What are common symptoms of OBDII code B1405 in a Chevrolet?

Common symptoms include issues with the vehicle's electrical system, such as erratic behavior of lights, gauges, or other electrical components.

3. What can cause the OBDII code B1405 to appear in a Chevrolet?

Possible causes can include a faulty control module, damaged wiring or connectors, or a problem with the voltage reference circuit itself.

4. How can I diagnose the OBDII code B1405 in my Chevrolet?

Diagnosing this code typically involves using a multimeter to test the voltage output of the control module and inspecting the wiring and connectors for any damage or corrosion.

5. Can I still drive my Chevrolet with the OBDII code B1405 present?

It is not recommended to drive your vehicle with this code present, as it can lead to further electrical issues and potential safety hazards.

6. How can I repair the OBDII code B1405 in my Chevrolet?

Repairing this code may involve replacing the control module, repairing damaged wiring or connectors, or addressing any issues with the voltage reference circuit.

7. Is it safe to reset the OBDII code B1405 in my Chevrolet using a scanner?

While you can reset the code using an OBDII scanner, it is important to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

8. Can a DIY enthusiast fix the OBDII code B1405 in a Chevrolet?

Depending on your level of experience and access to tools, a DIY enthusiast may be able to diagnose and repair this code, but it is recommended to consult a professional if unsure.

9. How much does it typically cost to repair the OBDII code B1405 in a Chevrolet?

The cost of repairing this code can vary depending on the extent of the issue and the specific repairs needed, so it is best to get a diagnosis from a mechanic for an accurate estimate.

10. Will the OBDII code B1405 cause my Chevrolet to fail an emissions test?

If this code is present during an emissions test, it may cause your Chevrolet to fail, as it indicates a problem with the vehicle's control module and electrical system.

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