B144B Chevrolet 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 Chevrolet 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 Chevrolet 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 Chevrolet?
- 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 Chevrolet?
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 Chevrolet 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 Chevrolet code?
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Get the B144B Chevrolet code diagnosed by a professional: Find a repair shop in your area
Information for Specific Chevrolet Models
- B144B 2014 Chevrolet Silverado — Run/Crank Power Relay Circuit
- B144B 2015 Chevrolet Silverado — Run/Crank Power Relay Circuit
- B144B 2016 Chevrolet Silverado — Run/Crank Power Relay Circuit
- B144B 2017 Chevrolet Silverado — Run/Crank Power Relay Circuit
- B144B 2018 Chevrolet Silverado — Run/Crank Power Relay Circuit
Frequently Asked Questions about B144B Chevrolet Code
1. What are the common symptoms of OBDII code B144B in a Chevrolet related to the Run/Crank Power Relay Circuit?
- Common symptoms include issues with starting the vehicle, intermittent or no crank condition, and potential stalling while driving.
2. What can cause the OBDII code B144B to appear in a Chevrolet?
- The code may be triggered by a faulty run/crank power relay, damaged wiring or connectors in the circuit, or a malfunctioning powertrain control module (PCM).
3. How can I diagnose the cause of OBDII code B144B in my Chevrolet?
- Diagnosing the issue involves checking the run/crank power relay for proper functionality, inspecting the wiring and connectors for any damage, and testing the PCM for faults using a diagnostic tool.
4. Can I still drive my Chevrolet with the OBDII code B144B present?
- It is not recommended to drive your vehicle with the B144B code active, as it can lead to potential starting and stalling issues, which may compromise safety and reliability.
5. Is it possible to reset the OBDII code B144B in a Chevrolet without fixing the underlying issue?
- While you can clear the code with a diagnostic tool, it is crucial to address the root cause of the problem to prevent the code from reappearing and ensure the proper functioning of the vehicle.
6. What are some repair tips for resolving OBDII code B144B in a Chevrolet?
- Repair tips include checking and replacing the run/crank power relay if faulty, repairing any damaged wiring or connectors, and reprogramming or replacing the PCM if necessary.
7. Can a DIY enthusiast fix OBDII code B144B in a Chevrolet, or is professional help recommended?
- Depending on your experience and access to tools, DIY enthusiasts may be able to address the issue by following repair guides. However, professional help is recommended for complex diagnostics and repairs.
8. Are there any recalls or service bulletins related to OBDII code B144B in Chevrolet vehicles?
- It is advisable to check with Chevrolet dealerships or online resources for any recalls or service bulletins specific to the B144B code in your vehicle model.
9. How long does it typically take to repair OBDII code B144B in a Chevrolet?
- The repair time can vary based on the exact cause of the issue, but it may take anywhere from a few hours to a full day to diagnose, repair, and test the components related to the B144B code.
10. What are the potential costs associated with fixing OBDII code B144B in a Chevrolet?
- The costs can vary depending on the required repairs, such as replacing the run/crank power relay, repairing wiring, or reprogramming the PCM. It is advisable to obtain quotes from mechanics or dealerships for accurate estimates.
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