B144B:02 Code - Run/Crank Power Relay Circuit Short to Ground
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:02 indicates Run/Crank 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.
Code B144B:02 Description
The Diagnostic Trouble Code (DTC) will be set when a short to ground is detected on the ignition run/crank relay coil control circuit.
What are the Possible Causes of the DTC B144B: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 B144B: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 B144B: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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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.
Discuss the causes and fixes for B144B:02 OBDII Code
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