AutoCodes – Generic – B144A:02

B144A:02 Code - Run Power Relay Circuit Short to Ground

Quick Answer

The body control module (BCM) feeds the ignition circuit by applying voltage when the ignition is in the ON position. Common causes include Faulty Ignition Main Relay, Ignition Main Relay harness is open or shorted, Ignition Main Relay circuit poor electrical connection. 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:02 indicates Run Power Relay Circuit Short to Ground.
Common causes: Common causes include Faulty Ignition Main Relay, Ignition Main Relay harness is open or shorted, Ignition Main Relay circuit poor electrical connection.
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 383

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 Apr 19, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B144A:02 Description

The body control module (BCM) feeds the ignition circuit by applying voltage when the ignition is in the ON position. The Diagnostic Trouble Code (DTC) will be set when a short to ground is detected on the ignition run relay coil control circuit.

OBDII Code B144A:02 - Run Power Relay Circuit Short to Ground - AutoCodes.com — B144A:02 Code - Run Power Relay Circuit Short to Ground

What does this mean?

What are the Possible Causes of the DTC B144A:02?

Faulty Ignition Main Relay
Ignition Main Relay harness is open or shorted
Ignition Main Relay circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B144A:02?

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 B144A:02 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.

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Need Help with the Code?

Get the B144A:02 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 B144A:02 Code

1. What are the common symptoms of OBDII code B144A:02?

The common symptoms of OBDII code B144A:02, which indicates a Run Power Relay Circuit Short to Ground, may include a no-start condition, intermittent stalling, or issues with the vehicle's electrical system.

2. What are the possible causes of OBDII code B144A:02?

Possible causes of OBDII code B144A:02 include a faulty run power relay, damaged wiring in the relay circuit, a short to ground in the circuit, or a malfunctioning powertrain control module (PCM).

3. How can I diagnose the issue related to OBDII code B144A:02?

To diagnose the issue related to OBDII code B144A:02, you may need to perform a thorough inspection of the run power relay and its circuit, check for any damaged wiring, perform continuity tests, and use a multimeter to check for shorts to ground.

4. Can I drive my vehicle with OBDII code B144A:02?

It is not recommended to drive your vehicle with OBDII code B144A:02, as it can lead to potential issues such as stalling or a no-start condition, which can affect the safety and performance of the vehicle.

5. How can I repair OBDII code B144A:02?

Repairing OBDII code B144A:02 involves identifying and fixing the root cause of the issue, which may include replacing the faulty run power relay, repairing damaged wiring, addressing any shorts to ground, or reprogramming the PCM if necessary.

6. Is it safe to reset the OBDII code B144A:02 without addressing the underlying issue?

It is not recommended to simply reset OBDII code B144A:02 without addressing the underlying issue, as the problem will likely persist and can lead to further issues with the vehicle's operation.

7. Can a DIY enthusiast fix OBDII code B144A:02 at home?

Depending on your skill level and access to tools, a DIY enthusiast may be able to fix OBDII code B144A:02 at home by following repair guides, performing diagnostics, and replacing any faulty components.

8. What is the role of the run power relay in the vehicle's electrical system?

The run power relay is responsible for providing power to critical components in the vehicle's electrical system when the ignition is in the "on" position, allowing the vehicle to start and operate properly.

9. Are there any safety precautions to consider when working on OBDII code B144A:02?

When working on OBDII code B144A:02, it is important to disconnect the vehicle's battery, wear appropriate safety gear, and follow proper procedures to avoid electrical shocks and other hazards.

10. What are the potential long-term effects of ignoring OBDII code B144A:02?

Ignoring OBDII code B144A:02 can lead to more severe electrical issues, engine performance problems, and potential safety hazards while driving, making it essential to address the problem promptly.