AutoCodes – Chevrolet – B1508 Chevrolet

B1508 Chevrolet Code - Low Voltage On Control Circuit

Quick Answer

The Body Control Module (BCM) monitors the load control circuit for opens, shorts to ground, and shorts to voltage. Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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: B1508 Chevrolet indicates Low Voltage On Control Circuit.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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 1,157

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 Jun 13, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1508 Chevrolet Description

The Body Control Module (BCM) monitors the load control circuit for opens, shorts to ground, and shorts to voltage. The circuit starts at the BCM and travels to the I/P fuse panel where the circuit splits to supply power for the heated seat switch and Heating, Ventilation, and Air Conditioning (HVAC) control head for the rear defog relay driver.

OBDII Code B1508 Chevrolet - Low Voltage On Control Circuit - AutoCodes.com — B1508 Chevrolet Code - Low Voltage On Control Circuit

What does this mean?

What are the Possible Causes of the DTC B1508 Chevrolet?

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

How to Fix the DTC B1508 Chevrolet?

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 B1508 Chevrolet 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.

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Need more information on how to fix the B1508 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1508 Chevrolet 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 B1508 Chevrolet Code

1. What are the common symptoms of OBDII code B1508 Chevrolet (Low Voltage On Control Circuit)?

- Common symptoms include issues with the vehicle's electrical system, such as dimming lights, problems with power windows or door locks, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code B1508 Chevrolet?

- Possible causes include a faulty control module, wiring issues, poor electrical connections, or a drained or weak battery.

3. How can I diagnose the cause of OBDII code B1508 Chevrolet?

- You can diagnose the issue by checking the vehicle's wiring and connections, testing the control module, and ensuring the battery is in good condition.

4. How can I repair OBDII code B1508 Chevrolet?

- Repair methods may include repairing or replacing damaged wiring, fixing poor electrical connections, replacing the control module, or charging or replacing the battery.

5. Can I drive my vehicle with OBDII code B1508 Chevrolet?

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

6. How much does it cost to repair OBDII code B1508 Chevrolet?

- The repair cost can vary depending on the exact cause of the issue and the labor rates in your area. It's best to get a diagnosis from a professional technician for an accurate estimate.

7. Will resetting the OBDII code B1508 Chevrolet make it go away?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code to appear. It's important to diagnose and repair the problem to prevent it from recurring.

8. Can a DIY enthusiast fix OBDII code B1508 Chevrolet at home?

- Depending on your skills and experience with automotive repairs, you may be able to address some of the common causes of this code at home. However, complex electrical issues may require professional assistance.

9. How long does it take to repair OBDII code B1508 Chevrolet?

- The repair time can vary depending on the specific cause of the code and the extent of the repairs needed. Simple fixes may take a few hours, while more complex issues could require more time.

10. Is OBDII code B1508 Chevrolet a serious issue?

- While it may not pose an immediate safety risk, ignoring or neglecting this code can lead to further electrical problems and potentially impact the vehicle's performance. It's best to address the issue promptly.