AutoCodes – Chevrolet – B1390 2017 Chevrolet Silverado

B1390 2017 Chevrolet Silverado Code - Control Module Supply Circuit 1

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Low battery voltage, Faulty Control Module, Control Module harness is open or shorted. 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: B1390 2017 Chevrolet Silverado indicates Control Module Supply Circuit 1.
Common causes: Common causes include Low battery voltage, Faulty Control Module, Control Module harness is open or shorted.
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 296

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 Jul 11, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1390 2017 Chevrolet Silverado Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Damage to components, and incorrect data can occur when the voltage is out of range. The vehicle has multiple Control Modules that will set this Diagnostic Trouble Code (DTC).

OBDII Code B1390 2017 Chevrolet Silverado - Control Module Supply Circuit 1 - AutoCodes.com — B1390 2017 Chevrolet Silverado Code - Control Module Supply Circuit 1

What does this mean?

What are the Possible Causes of the DTC B1390 2017 Chevrolet Silverado?

Low battery voltage
Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC B1390 2017 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 B1390 2017 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 B1390 2017 Chevrolet Silverado code?

Need more information on how to fix the B1390 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1390 2017 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 B1390 2017 Chevrolet Silverado Code

1. What does the OBDII code B1390 mean on a 2017 Chevrolet Silverado?

B1390 indicates an issue with "Control Module Supply Circuit 1," meaning the control module may not be receiving proper voltage or has a power supply issue.

2. What are common symptoms of the B1390 code on a 2017 Silverado?

Symptoms may include warning lights on the dashboard, intermittent electrical issues, failure of certain systems like lights or climate control, or the vehicle not starting.

3. What causes the B1390 code to appear on a 2017 Chevrolet Silverado?

Common causes include a blown fuse, damaged wiring, a faulty control module, poor ground connection, or a weak battery.

4. How do I diagnose the B1390 code on my Silverado?

Start by checking fuses, inspecting wiring for damage or corrosion, testing the battery voltage, and verifying ground connections. A scan tool can help pinpoint the issue.

5. Can a weak battery trigger the B1390 code in a 2017 Silverado?

Yes, a weak or failing battery can cause insufficient voltage to the control module, triggering the B1390 code.

6. Is it safe to drive with the B1390 code on my 2017 Silverado?

It depends on the severity of the issue. If critical systems are affected, it may not be safe to drive. Have it diagnosed and repaired promptly.

7. How can I fix the B1390 code on my Silverado?

Repair steps may include replacing a blown fuse, repairing damaged wiring, cleaning ground connections, or replacing a faulty control module.

8. Can the B1390 code clear itself after repairs?

In some cases, the code may clear itself after resolving the issue. If not, use a scan tool to manually clear the code.

9. How much does it cost to fix the B1390 code on a 2017 Chevrolet Silverado?

Repair costs vary depending on the root cause but can range from $50 for a simple fuse replacement to $500 or more for control module replacement.

10. Can a software update resolve the B1390 code on my Silverado?

In rare cases, if the control module is functioning but experiencing software glitches, a dealership may recommend a software update to resolve the issue.