AutoCodes – GMC – B1425 2015 GMC Sierra

B1425 2015 GMC Sierra Code - Control Module Power Circuit

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: B1425 2015 GMC Sierra indicates Control Module Power Circuit.
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 180

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 B1425 2015 GMC Sierra 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 B1425 2015 GMC Sierra - Control Module Power Circuit - AutoCodes.com — B1425 2015 GMC Sierra Code - Control Module Power Circuit

What does this mean?

What are the Possible Causes of the DTC B1425 2015 GMC Sierra?

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

How to Fix the DTC B1425 2015 GMC Sierra?

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 B1425 2015 GMC Sierra 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 B1425 2015 GMC Sierra code?

Need more information on how to fix the B1425 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 B1425 2015 GMC Sierra Code

1. What does OBDII code B1425 mean on a 2015 GMC Sierra?

Code B1425 indicates an issue with the control module power circuit, which may involve a voltage supply problem or a fault in the power or ground connections to the control module.

2. What are the symptoms of code B1425 in a 2015 GMC Sierra?

Common symptoms include malfunctioning vehicle systems controlled by the affected module, warning lights on the dashboard, and possible intermittent electrical issues.

3. What causes the B1425 code on a 2015 GMC Sierra?

Typical causes include a blown fuse, damaged wiring, poor ground connections, or a faulty control module that is not receiving proper power.

4. Can code B1425 cause drivability issues?

While it may not directly affect drivability, the systems controlled by the moduleâ€”such as climate control or other featuresâ€”may not function properly.

5. How do I diagnose code B1425 on a GMC Sierra?

Start by checking the fuses, inspecting the wiring and connectors for damage or corrosion, and ensuring the control module has a proper power and ground supply.

6. What should I check first when troubleshooting code B1425?

Begin by inspecting the fuses related to the control module and checking for loose or corroded connections in the power circuit.

7. Is a faulty control module the main cause of code B1425?

Not always. While the control module could be at fault, the issue is more often due to wiring problems, a blown fuse, or a poor ground connection.

8. Can I clear code B1425 without fixing the issue?

Clearing the code without addressing the root cause will likely result in the code returning, as the underlying problem remains unresolved.

9. How much does it cost to repair code B1425 on a 2015 GMC Sierra?

Repair costs can vary depending on the cause. Fixing a wiring issue may cost less than $100, while replacing a control module could cost $500 or more, including reprogramming.

10. Do I need a professional mechanic to fix code B1425?

If the issue is related to basic wiring or a fuse, you may be able to fix it yourself. However, diagnosing and replacing a control module typically requires professional tools and expertise.