AutoCodes – Chevrolet – B1400 2018 Chevrolet Silverado

B1400 2018 Chevrolet Silverado Code - Control Module Supply Circuit 2

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: B1400 2018 Chevrolet Silverado indicates Control Module Supply Circuit 2.
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 276

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 B1400 2018 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 B1400 2018 Chevrolet Silverado - Control Module Supply Circuit 2 - AutoCodes.com — B1400 2018 Chevrolet Silverado Code - Control Module Supply Circuit 2

What does this mean?

What are the Possible Causes of the DTC B1400 2018 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 B1400 2018 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 B1400 2018 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 B1400 2018 Chevrolet Silverado code?

Need more information on how to fix the B1400 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1400 2018 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 B1400 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B1400 in a 2018 Chevrolet Silverado?

The common symptoms of OBDII code B1400 in a 2018 Chevrolet Silverado include issues with the vehicle's electrical system, such as intermittent or complete loss of power to certain control modules.

2. What are the possible causes of OBDII code B1400 in a 2018 Chevrolet Silverado?

Possible causes of OBDII code B1400 in a 2018 Chevrolet Silverado include a faulty control module, damaged wiring or connectors in the supply circuit, or a malfunctioning power supply.

3. How can I diagnose OBDII code B1400 in my 2018 Chevrolet Silverado?

Diagnosing OBDII code B1400 in a 2018 Chevrolet Silverado typically involves using a diagnostic scanner to retrieve the trouble codes, inspecting the control module and its connections, and testing the power supply circuit for proper voltage.

4. Can I drive my 2018 Chevrolet Silverado with OBDII code B1400?

It is not recommended to drive your 2018 Chevrolet Silverado with OBDII code B1400, as it can lead to electrical malfunctions that may affect the vehicle's performance and safety.

5. How serious is OBDII code B1400 in a 2018 Chevrolet Silverado?

OBDII code B1400 in a 2018 Chevrolet Silverado indicates a problem with the control module supply circuit 2, which can impact the functionality of crucial vehicle systems. It should be addressed promptly to avoid further issues.

6. Are there any quick repair tips for fixing OBDII code B1400 in a 2018 Chevrolet Silverado?

Quick repair tips for OBDII code B1400 in a 2018 Chevrolet Silverado include checking and securing all wiring connections, inspecting the control module for damage, and ensuring the power supply is functioning correctly.

7. How much does it cost to repair OBDII code B1400 in a 2018 Chevrolet Silverado?

The cost to repair OBDII code B1400 in a 2018 Chevrolet Silverado can vary depending on the underlying cause of the issue. It may involve replacing a control module, repairing damaged wiring, or addressing power supply issues, so costs can range from moderate to more expensive.

8. Can OBDII code B1400 in a 2018 Chevrolet Silverado be reset without fixing the underlying issue?

Resetting OBDII code B1400 in a 2018 Chevrolet Silverado without fixing the underlying issue is not recommended, as the problem will likely reoccur. It's essential to diagnose and address the root cause of the code to prevent further issues.

9. Will disconnecting the battery reset OBDII code B1400 in a 2018 Chevrolet Silverado?

Disconnecting the battery may reset OBDII codes temporarily, including B1400 in a 2018 Chevrolet Silverado, but if the underlying issue is not fixed, the code is likely to reappear after some driving cycles.

10. How long does it typically take to repair OBDII code B1400 in a 2018 Chevrolet Silverado?

The repair time for OBDII code B1400 in a 2018 Chevrolet Silverado can vary based on the specific cause of the issue and the complexity of the repair needed. It may take anywhere from a few hours to a full day to diagnose and fix the problem effectively.