AutoCodes – GMC – B1415 2018 GMC Sierra

B1415 2018 GMC Sierra Code - Control Module Voltage Reference Output 3

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: B1415 2018 GMC Sierra indicates Control Module Voltage Reference Output 3.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 169

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1415 2018 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 B1415 2018 GMC Sierra - Control Module Voltage Reference Output 3 - AutoCodes.com — B1415 2018 GMC Sierra Code - Control Module Voltage Reference Output 3

What does this mean?

What are the Possible Causes of the DTC B1415 2018 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 B1415 2018 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 B1415 2018 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 B1415 2018 GMC Sierra code?

Need more information on how to fix the B1415 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1415 2018 GMC Sierra 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 B1415 2018 GMC Sierra Code

1. What does the OBDII code B1415 mean on a 2018 GMC Sierra?

The B1415 code indicates an issue with the Control Module Voltage Reference Output 3, which is responsible for supplying a stable voltage signal to certain vehicle sensors or components.

2. What are the common symptoms of the B1415 code on a 2018 GMC Sierra?

Symptoms may include illuminated warning lights, erratic sensor readings, malfunctioning components like HVAC systems, or poor vehicle performance.

3. What causes the B1415 code to appear on a 2018 GMC Sierra?

Common causes include a short or open circuit in the voltage reference wiring, a faulty control module, damaged sensors, or corrosion in the electrical connectors.

4. Can I drive my 2018 GMC Sierra with the B1415 code?

While the vehicle may still be drivable, ignoring this issue could lead to further electrical problems or affect the performance of connected systems.

5. How do I diagnose the B1415 code on my 2018 GMC Sierra?

Use a diagnostic scanner to confirm the code, inspect the voltage reference circuit for shorts or opens, and check connectors and wiring for damage or corrosion.

6. What sensors or systems rely on Voltage Reference Output 3 in a 2018 GMC Sierra?

Voltage Reference Output 3 may supply power to components like HVAC controls, throttle position sensors, or other key sensors, depending on the vehicle configuration.

7. How do I fix the B1415 code on a 2018 GMC Sierra?

Repairs may include fixing or replacing damaged wiring, cleaning corroded connectors, or replacing a faulty control module or affected sensors.

8. How much does it cost to repair the B1415 code on a 2018 GMC Sierra?

Repair costs vary widely but may range from $50 for wiring repairs to $500 or more for control module replacement, plus labor.

9. Can a bad battery cause the B1415 code on a 2018 GMC Sierra?

Yes, a weak or failing battery can cause voltage irregularities that may trigger this code, so ensure the battery and charging system are functioning properly.

10. Do I need to clear the B1415 code after repairs on my 2018 GMC Sierra?

Yes, after completing repairs, clear the code with a scanner and test drive the vehicle to ensure the issue is resolved.