AutoCodes – Chevrolet – B1390 2014 Chevrolet Silverado

B1390 2014 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 2014 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 377

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 2014 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 2014 Chevrolet Silverado - Control Module Supply Circuit 1 - AutoCodes.com — B1390 2014 Chevrolet Silverado Code - Control Module Supply Circuit 1

What does this mean?

What are the Possible Causes of the DTC B1390 2014 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 2014 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 2014 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 2014 Chevrolet Silverado code?

Need more information on how to fix the B1390 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1390 2014 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 2014 Chevrolet Silverado Code

1. What does OBDII code B1390 for a 2014 Chevrolet Silverado mean?

The B1390 code indicates a problem with Control Module Supply Circuit 1 in the vehicle's system.

2. What are the common symptoms of OBDII code B1390 in a 2014 Chevrolet Silverado?

Common symptoms include issues with starting the vehicle, rough idling, and potential stalling while driving.

3. What are the possible causes of OBDII code B1390 in a 2014 Chevrolet Silverado?

Possible causes include a faulty control module, damaged wiring or connectors, a weak or dead battery, or issues with the vehicle's charging system.

4. How can I diagnose the OBDII code B1390 in my 2014 Chevrolet Silverado?

Diagnosing the B1390 code typically involves using a diagnostic scanner to retrieve the specific details of the fault, checking the control module and related components for any visible damage, and testing the circuit for continuity.

5. Can I still drive my 2014 Chevrolet Silverado with the B1390 code?

It's not recommended to drive the vehicle with the B1390 code present, as it can lead to potential safety hazards and further damage to the vehicle's systems.

6. How do I repair OBDII code B1390 in a 2014 Chevrolet Silverado?

Repairing the B1390 code may involve replacing the faulty control module, repairing or replacing damaged wiring or connectors, ensuring the battery is in good condition, and addressing any issues with the charging system.

7. Is it necessary to reset the OBDII code B1390 after repairs on a 2014 Chevrolet Silverado?

Yes, it's important to clear the B1390 code after completing repairs to see if the issue has been successfully resolved and to turn off the Check Engine Light.

8. Can a DIY enthusiast fix the OBDII code B1390 in a 2014 Chevrolet Silverado?

Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to address simpler causes of the B1390 code, such as checking and cleaning connectors or replacing the battery. More complex issues may require professional assistance.

9. How much does it cost to repair OBDII code B1390 in a 2014 Chevrolet Silverado?

The cost of repairing the B1390 code can vary depending on the specific cause of the issue, parts needed for replacement, and labor rates. It's recommended to obtain quotes from reputable mechanics or repair shops.

10. Are there any preventive measures to avoid OBDII code B1390 in a 2014 Chevrolet Silverado?

Regular vehicle maintenance, including checking the battery health and ensuring proper electrical system function, can help prevent issues that may trigger the B1390 code.