AutoCodesChevrolet – B1400 2016 Chevrolet Silverado

B1400 2016 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 2016 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.
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Code Popularity 208
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 11, 2022
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Code B1400 2016 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 2016 Chevrolet Silverado - Control Module Supply Circuit 2 - AutoCodes.com
B1400 2016 Chevrolet Silverado Code - Control Module Supply Circuit 2

What are the Possible Causes of the DTC B1400 2016 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 2016 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 2016 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 2016 Chevrolet Silverado code?

Need more information on how to fix the B1400 2016 Chevrolet Silverado 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 B1400 2016 Chevrolet Silverado Code

1. What does the OBDII code B1400 mean on a 2016 Chevrolet Silverado?

B1400 indicates an issue with Control Module Supply Circuit 2, which involves a power supply malfunction to one of the vehicle's control modules.

2. What are the common symptoms of code B1400 in a 2016 Chevrolet Silverado?

Symptoms may include warning lights on the dashboard, intermittent electrical issues, or modules failing to communicate properly.

3. What causes the B1400 code to appear on a 2016 Chevrolet Silverado?

Common causes include blown fuses, damaged wiring, poor ground connections, or a faulty control module.

4. Can a weak battery cause the B1400 code in a Chevrolet Silverado?

Yes, a weak or failing battery can cause voltage irregularities that may trigger this code.

5. How do you diagnose the B1400 code in a 2016 Chevrolet Silverado?

Diagnosis involves checking fuses, inspecting wiring for damage, testing the affected circuit for proper voltage, and verifying module functionality with a diagnostic scan tool.

6. Is it safe to drive with the B1400 code in a 2016 Chevrolet Silverado?

While the vehicle may still be drivable, this code can lead to electrical malfunctions that could affect safety systems. It’s best to address the issue promptly.

7. How do you fix the B1400 code on a 2016 Chevrolet Silverado?

Repairs may include replacing blown fuses, repairing damaged wiring, cleaning or tightening ground connections, or replacing a faulty control module.

8. How much does it cost to fix the B1400 code on a Chevrolet Silverado?

The cost varies depending on the root cause. Simple fixes like a fuse replacement might cost less than $50, while module replacement could exceed $500.

9. Can the B1400 code clear itself on a 2016 Chevrolet Silverado?

The code may clear temporarily if the issue is intermittent, but it will likely return until the underlying cause is resolved.

10. What tools are needed to troubleshoot the B1400 code in a Chevrolet Silverado?

Basic tools include a multimeter to test voltage, a diagnostic scan tool to read and clear codes, and possibly wiring diagrams to trace circuits.

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