AutoCodes – Generic – B144A

B144A Code - Run Power Relay Circuit

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 indicates Run Power Relay Circuit.
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 6,569

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 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 there is a fault in the ignition run relay coil control circuit.

OBDII Code B144A - Run Power Relay Circuit - AutoCodes.com — B144A Code - Run Power Relay Circuit

What does this mean?

What are the Possible Causes of the DTC B144A?

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?

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 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 B144A code?

Need more information on how to fix the B144A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B144A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B144A Buick — Run Power Relay Circuit
B144A Cadillac — Run Power Relay Circuit
B144A Chevrolet — Run Power Relay Circuit
B144A GMC — Run Power Relay Circuit

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 Code

1. What are the common symptoms of OBDII code B144A (Run Power Relay Circuit)?

- Common symptoms include issues with starting the vehicle, intermittent stalling, and a check engine light illuminating on the dashboard.

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

- Possible causes of this code include a faulty run power relay, damaged wiring or connectors in the circuit, or a malfunctioning powertrain control module (PCM).

3. How can I diagnose the source of OBDII code B144A?

- Diagnosing this code involves inspecting the run power relay, checking the wiring and connectors for any damage, and using a multimeter to test the circuit's voltage and continuity.

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

- It is not recommended to drive your vehicle with this code present, as it can lead to potential issues with starting and running the engine, increasing the risk of stalling while driving.

5. How can I repair OBDII code B144A?

- Repairing this code typically involves replacing the faulty run power relay, repairing any damaged wiring or connectors, and clearing the code using an OBDII scanner.

6. Is it possible to reset OBDII code B144A without fixing the underlying issue?

- While you can clear the code temporarily with an OBDII scanner, the issue causing the code will likely persist, leading to potential problems with the vehicle's performance.

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

- DIY enthusiasts with some experience in automotive repair may be able to address this code by following repair guides and using the necessary tools to replace the run power relay or repair wiring issues.

8. How much does it cost to repair OBDII code B144A at a mechanic or dealership?

- The cost of repairing this code can vary depending on the labor rates and parts costs at the mechanic or dealership, but it typically involves a few hundred dollars for parts and labor.

9. Are there any preventive measures to avoid OBDII code B144A in the future?

- Regular maintenance checks, such as inspecting the electrical system and components, can help prevent issues like OBDII code B144A from occurring by addressing potential problems early on.

10. Can OBDII code B144A cause permanent damage to my vehicle if left unresolved?

- Ignoring OBDII code B144A can potentially lead to more severe issues with the vehicle's electrical system and engine performance, so it is advisable to address the problem promptly to prevent further damage.