B144B GMC Code - Run/Crank Power Relay Circuit
Quick Answer
The Body Control Module (BCM) controls the Ignition Main Relay (underhood) and the Ignition Main Relay (instrument panel left) through their control circuits by applying a voltage to the ignition run/crank relay coil control circuit. 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
- B144B GMC indicates Run/Crank 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.
Code B144B GMC Description
The Diagnostic Trouble Code (DTC) will be set when there is a fault in the Ignition Main Relay Circuit.
What are the Possible Causes of the DTC B144B GMC?
- 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 B144B GMC?
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 B144B GMC 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 B144B GMC code?
Need more information on how to fix the B144B GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B144B GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- B144B 2014 GMC Sierra — Run/Crank Power Relay Circuit
- B144B 2015 GMC Sierra — Run/Crank Power Relay Circuit
- B144B 2016 GMC Sierra — Run/Crank Power Relay Circuit
- B144B 2017 GMC Sierra — Run/Crank Power Relay Circuit
- B144B 2018 GMC Sierra — Run/Crank Power Relay Circuit
Frequently Asked Questions about B144B GMC Code
1. What are the common symptoms of OBDII code B144B GMC related to the Run/Crank Power Relay Circuit?
- Common symptoms include engine stalling, difficulty starting the vehicle, and intermittent loss of power while driving.
2. What are the possible causes of OBDII code B144B GMC?
- The code B144B GMC can be triggered by issues such as a faulty power relay, wiring problems, or a malfunctioning control module.
3. How can I diagnose the OBDII code B144B GMC related to the Run/Crank Power Relay Circuit?
- Diagnosing this code typically involves using a scan tool to read the code, inspecting the power relay and related wiring, and testing the control module for proper function.
4. Is it safe to continue driving with the OBDII code B144B GMC active?
- It is not recommended to continue driving with this code active, as it can lead to potential safety hazards and further damage to the vehicle's components.
5. Can I repair the OBDII code B144B GMC myself?
- While some DIY enthusiasts may attempt to repair this code themselves, it is advisable to seek professional help to ensure proper diagnosis and repair of the underlying issue.
6. How much does it typically cost to repair OBDII code B144B GMC?
- The cost of repairing this code can vary depending on the root cause of the issue, but it may range from $100 to $500 or more, including parts and labor.
7. Are there any preventive maintenance tips to avoid OBDII code B144B GMC?
- Regularly inspecting and maintaining the vehicle's electrical system, including the power relay and wiring, can help prevent issues that may trigger the B144B GMC code.
8. Can extreme weather conditions affect the occurrence of OBDII code B144B GMC?
- Yes, extreme temperatures or weather conditions can potentially impact the performance of the power relay and contribute to triggering the B144B GMC code.
9. How urgent is it to address the OBDII code B144B GMC once it appears?
- It is recommended to address the B144B GMC code promptly to avoid potential safety risks, further damage, and increased repair costs in the long run.
10. What should I do if I encounter the OBDII code B144B GMC but notice no driving symptoms?
- Even if there are no immediate driving symptoms, it is still crucial to have the vehicle inspected by a professional to prevent potential issues from escalating.
Discuss the causes and fixes for B144B GMC OBDII Code
Code B144B GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
