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B144B 2018 Chevrolet Silverado Code - Run/Crank Power Relay Circuit

Quick Answer

The B144B code for a 2018 Chevrolet Silverado indicates a problem with the Run/Crank Power Relay Circuit. Common causes include Faulty power relay, Wiring or connection issues in the relay circuit, Corrosion or damage to relay terminals. 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
B144B 2018 Chevrolet Silverado indicates Run/Crank Power Relay Circuit.
Common causes
Common causes include Faulty power relay, Wiring or connection issues in the relay circuit, Corrosion or damage to relay terminals.
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 Aug 19, 2024
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Code B144B 2018 Chevrolet Silverado Description

The B144B code for a 2018 Chevrolet Silverado indicates a problem with the Run/Crank Power Relay Circuit. This circuit is responsible for providing power to the vehicle's engine control module (ECM) and other critical components needed to start the engine. When this circuit malfunctions, it can prevent the engine from starting or cause intermittent starting issues. The relay in this circuit controls the flow of electricity to these components, and if it fails, it can disrupt the entire starting process.

OBDII Code B144B 2018 Chevrolet Silverado - Run/Crank Power Relay Circuit
B144B 2018 Chevrolet Silverado Code - Run/Crank Power Relay Circuit

Common Causes of B144B 2018 Chevrolet Silverado

  1. Faulty power relay
  2. Wiring or connection issues in the relay circuit
  3. Corrosion or damage to relay terminals
  4. ECM malfunction
  5. Electrical system issues

Symptoms of B144B 2018 Chevrolet Silverado

  1. Engine cranks but does not start
  2. Intermittent starting issues
  3. Engine stalls shortly after starting
  4. Check engine light illuminated
  5. Loss of power while driving

How to Fix B144B 2018 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the code using a diagnostic scanner to pinpoint the exact issue.
  2. Check the power relay for proper operation and replace it if necessary.
  3. Inspect the wiring and connections in the relay circuit for any damage or corrosion, repairing or replacing as needed.
  4. Test the ECM for proper functioning and replace if found to be faulty.
  5. Clear the code from the vehicle's computer and test the vehicle to ensure the issue has been resolved.

Cost to Fix B144B 2018 Chevrolet Silverado

The typical repair costs for a Run/Crank Power Relay Circuit issue can range from $100 to $300, depending on the specific cause of the problem and the cost of parts. This estimate includes the cost of a new relay, any necessary wiring repairs, and labor. However, it's important to note that actual repair costs can vary based on factors such as location, labor rates, and whether any additional parts or repairs are needed. It's recommended to consult with a trusted auto repair shop 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 B144B 2018 Chevrolet Silverado Code

1. What does OBDII code B144B on a 2018 Chevrolet Silverado indicate?

The B144B code indicates a problem with the Run/Crank Power Relay Circuit in the vehicle.

2. What are some common symptoms of a Run/Crank Power Relay Circuit issue in a 2018 Chevrolet Silverado?

Common symptoms include difficulty starting the vehicle, engine stalling, and intermittent power loss while driving.

3. What are possible causes of the B144B trouble code in a 2018 Chevrolet Silverado?

Possible causes include a faulty power relay, wiring issues, poor electrical connections, or a malfunctioning control module.

4. How can I diagnose a Run/Crank Power Relay Circuit problem in my 2018 Chevrolet Silverado?

Diagnosis typically involves using a diagnostic scanner to retrieve the trouble code, inspecting the relay and related wiring, and testing the power relay for proper functionality.

5. Can I still drive my 2018 Chevrolet Silverado with the B144B trouble code present?

It is not recommended to drive the vehicle with this code present, as it can lead to potential safety hazards and further damage to the vehicle.

6. How can I repair a B144B trouble code in my 2018 Chevrolet Silverado?

Repairing the issue may involve replacing the faulty power relay, repairing damaged wiring, ensuring proper electrical connections, or reprogramming the control module.

7. Is it possible to reset the B144B trouble code in a 2018 Chevrolet Silverado without making repairs?

Resetting the code without addressing the underlying issue may temporarily clear the code, but it is likely to return until the root cause is fixed.

8. Are there any preventive maintenance tips to avoid encountering the B144B trouble code in a 2018 Chevrolet Silverado?

Regularly inspecting the vehicle's electrical system, maintaining proper battery health, and addressing any warning signs promptly can help prevent issues leading to this trouble code.

9. Can a DIY enthusiast without advanced automotive knowledge address a B144B trouble code in a 2018 Chevrolet Silverado?

While some basic troubleshooting steps can be taken, diagnosing and repairing electrical issues like the Run/Crank Power Relay Circuit may require professional expertise and specialized tools.

10. How long does it typically take to repair a B144B trouble code in a 2018 Chevrolet Silverado?

The repair time can vary depending on the exact cause of the issue, but it may range from a quick relay replacement to more extensive troubleshooting and repair work taking several hours or more.

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