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Engine-Codes – Generic – B144B:02

B144B:02 Code - Run/Crank Power Relay Circuit Short to Ground

Quick Answer

The B144B:02 diagnostic trouble code (DTC) refers to a Run/Crank Power Relay Circuit Short to Ground. Common causes include Damaged or corroded wiring in the power relay circuit, Faulty power relay, Short circuit in the system. 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:02 indicates Run/Crank Power Relay Circuit Short to Ground.
Common causes
Common causes include Damaged or corroded wiring in the power relay circuit, Faulty power relay, Short circuit in the system.
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 12, 2024
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Code B144B:02 Description

The B144B:02 diagnostic trouble code (DTC) refers to a Run/Crank Power Relay Circuit Short to Ground. This code indicates that there is a short circuit between the power relay for the vehicle's running or cranking systems and the ground. The power relay is responsible for controlling the power supply to various components that are essential for starting and running the engine. When a short to ground occurs in this circuit, it can disrupt the proper functioning of these systems, leading to various issues with the vehicle's performance.

OBDII Code B144B:02 - Run/Crank Power Relay Circuit Short to Ground
B144B:02 Code - Run/Crank Power Relay Circuit Short to Ground

Common Causes of B144B:02

  1. Damaged or corroded wiring in the power relay circuit
  2. Faulty power relay
  3. Short circuit in the system
  4. Water damage to the electrical components
  5. Electrical faults due to wear and tear

Symptoms of B144B:02

  1. Difficulty starting the engine
  2. Engine stalling or shutting off unexpectedly
  3. Lack of power or acceleration while driving
  4. Electrical malfunctions, such as flickering lights
  5. Check Engine Light illuminated on the dashboard

How to Fix B144B:02

  1. Perform a thorough inspection of the power relay circuit to identify the short to ground
  2. Test the power relay for functionality and replace if necessary
  3. Repair or replace any damaged or corroded wiring in the circuit
  4. Clear the DTC from the vehicle's computer system
  5. Test drive the vehicle to ensure the issue has been resolved

Cost to Fix B144B:02

The typical repair costs for addressing a Run/Crank Power Relay Circuit Short to Ground can vary depending on the extent of the damage and the specific components that need to be repaired or replaced. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. However, it is important to note that the actual costs may differ based on factors such as location, vehicle make and model, and the specific diagnosis time and labor rates at auto repair shops. It is recommended to consult with a trusted mechanic or auto repair shop for a more accurate estimate based on the individual circumstances of the vehicle.

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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:02 Code

1. What does the OBDII code B144B:02 mean?

The code B144B:02 indicates a short to ground in the Run/Crank Power Relay Circuit, which affects power distribution during engine start and operation.

2. What are the common symptoms of code B144B:02?

Symptoms may include difficulty starting the engine, intermittent stalling, or loss of electrical power to key systems.

3. What causes the B144B:02 code?

Common causes include a damaged run/crank power relay, frayed or shorted wiring, or a faulty control module.

4. How can I diagnose the B144B:02 code?

Start by inspecting the run/crank power relay and associated wiring for visible damage or corrosion. Use a multimeter to check for shorts to ground.

5. Can I drive my vehicle with the B144B:02 code?

Driving with this code is not recommended, as it can lead to unreliable engine starts or stalling, potentially leaving you stranded.

6. How do I fix the B144B:02 code?

Repairs typically involve replacing the faulty run/crank power relay, repairing damaged wiring, or addressing any issues with the control module.

7. How much does it cost to fix the B144B:02 code?

Repair costs vary but may range from $50 to $250 depending on whether parts like relays or wiring need replacement.

8. Can a weak battery cause the B144B:02 code?

While unlikely, a weak battery can exacerbate electrical issues. Ensure the battery is fully charged and in good condition before diagnosing further.

9. Does the B144B:02 code require professional repair?

If you’re not comfortable working with electrical systems or don’t have diagnostic tools, it’s best to consult a professional mechanic.

10. How can I prevent the B144B:02 code from occurring?

Regularly inspect electrical wiring and relays for wear or corrosion, and address any issues promptly to prevent shorts to ground.

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