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Engine-Codes – GMC – B144A 2016 GMC Sierra

B144A 2016 GMC Sierra Code - Run Power Relay Circuit

Quick Answer

The B144A diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Run Power Relay Circuit. Common causes include Faulty run power relay, Corroded or damaged wiring in the relay circuit, Loose connections in the relay circuit. 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
B144A 2016 GMC Sierra indicates Run Power Relay Circuit.
Common causes
Common causes include Faulty run power relay, Corroded or damaged wiring in the relay circuit, Loose connections in the relay circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code B144A 2016 GMC Sierra Description

The B144A diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Run Power Relay Circuit. This code indicates that there is a malfunction in the circuit responsible for powering the vehicle's systems when the ignition is turned on. The run power relay is a crucial component that controls the flow of electricity to various systems in the vehicle, such as the engine control module, fuel pump, and ignition system. When this relay circuit fails, it can lead to a variety of issues that can affect the vehicle's performance and overall functionality.

OBDII Code B144A 2016 GMC Sierra - Run Power Relay Circuit
B144A 2016 GMC Sierra Code - Run Power Relay Circuit

Common Causes of B144A 2016 GMC Sierra

  1. Faulty run power relay
  2. Corroded or damaged wiring in the relay circuit
  3. Loose connections in the relay circuit
  4. Issues with the engine control module
  5. Electrical system malfunction

Symptoms of B144A 2016 GMC Sierra

  1. Engine stalling or failure to start
  2. Electrical accessories not working properly
  3. Check engine light illuminated on the dashboard
  4. Vehicle experiencing intermittent power loss
  5. Rough idling or poor engine performance

How to Fix B144A 2016 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to read the DTC and pinpoint the problem.
  2. Inspect the run power relay and its connections for any signs of damage, corrosion, or loose wiring. Replace the relay if necessary.
  3. Check the wiring in the relay circuit for any damage or corrosion. Repair or replace any damaged wiring.
  4. Test the engine control module to ensure it is functioning correctly. Replace if necessary.
  5. Clear the DTC from the vehicle's computer system and test the vehicle to ensure the issue has been resolved.

Cost to Fix B144A 2016 GMC Sierra

The cost of repairing a run power relay circuit issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay anywhere from $100 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates can vary, so it's best to check with local auto repair shops for a more accurate estimate.

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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 B144A 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code B144A in a 2016 GMC Sierra related to the Run Power Relay Circuit?

The common symptoms include intermittent or complete loss of power to various vehicle systems, failure to start, and possible illumination of the check engine light.

2. What could cause the OBDII code B144A in a 2016 GMC Sierra?

The code B144A typically points to a malfunction in the Run Power Relay Circuit, which could be caused by a faulty relay, wiring issues, or a defective powertrain control module (PCM).

3. How can I diagnose the cause of OBDII code B144A in my 2016 GMC Sierra?

Diagnosing the issue involves checking the relay, inspecting the wiring for any damage or loose connections, and testing the PCM for proper functionality using a diagnostic tool.

4. Is it safe to continue driving my 2016 GMC Sierra with the OBDII code B144A present?

It is not recommended to drive the vehicle with the code B144A active, as it may lead to further electrical problems, performance issues, or even sudden stalling of the vehicle.

5. Can I repair the OBDII code B144A in my 2016 GMC Sierra myself?

Repairing the code B144A may require advanced knowledge of automotive electrical systems. It is recommended to seek assistance from a qualified mechanic or dealership to properly diagnose and repair the issue.

6. Are there any quick tips for fixing the OBDII code B144A in a 2016 GMC Sierra?

Quick tips include checking and replacing the relay if necessary, inspecting the wiring harness for any visible damage, and resetting the PCM after repairs to see if the code reappears.

7. How much does it typically cost to repair the OBDII code B144A in a 2016 GMC Sierra?

The cost of repairing the code B144A can vary depending on the exact cause of the issue. It may range from a few hundred dollars for a simple relay replacement to more expensive repairs if the PCM needs to be replaced.

8. Will resetting the OBDII code B144A in my 2016 GMC Sierra make it go away permanently?

Resetting the code may temporarily clear the check engine light, but if the underlying issue is not fixed, the code is likely to reappear once the problem resurfaces.

9. Can extreme weather conditions affect the occurrence of OBDII code B144A in a 2016 GMC Sierra?

Yes, extreme temperatures or humidity levels can sometimes exacerbate electrical issues, potentially leading to the activation of the code B144A in the vehicle.

10. Is the OBDII code B144A in a 2016 GMC Sierra a common problem among owners?

While the B144A code specifically related to the Run Power Relay Circuit may not be extremely common, electrical issues in vehicles, in general, can occur and should be promptly addressed to prevent further damage.

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