B1390 2015 Chevrolet Silverado Code - Control Module Supply Circuit 1
Quick Answer
The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Low battery voltage, Faulty Control Module, Control Module harness is open or shorted. 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
- B1390 2015 Chevrolet Silverado indicates Control Module Supply Circuit 1.
- Common causes
- Common causes include Low battery voltage, Faulty Control Module, Control Module harness is open or shorted.
- 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 B1390 2015 Chevrolet Silverado Description
What are the Possible Causes of the DTC B1390 2015 Chevrolet Silverado?
- Low battery voltage
- Faulty Control Module
- Control Module harness is open or shorted
- Control Module circuit poor electrical connection
How to Fix the DTC B1390 2015 Chevrolet Silverado?
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 B1390 2015 Chevrolet Silverado 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 B1390 2015 Chevrolet Silverado Code
1. What does the OBDII code B1390 mean on a 2015 Chevrolet Silverado?
Code B1390 indicates an issue with the Control Module Supply Circuit 1, which refers to a problem with the power supply to one of the vehicle's control modules.
2. What are the common symptoms of code B1390 in a 2015 Chevrolet Silverado?
Symptoms may include warning lights on the dashboard, intermittent electrical issues, failure of certain systems like lighting or HVAC, and possible starting difficulties.
3. What causes the B1390 code in a 2015 Chevrolet Silverado?
Common causes include a blown fuse, damaged wiring, a faulty control module, or poor electrical connections in the Control Module Supply Circuit 1.
4. Can a weak battery trigger the B1390 code on a 2015 Chevrolet Silverado?
Yes, a weak or failing battery can cause insufficient power to the control module, potentially triggering the B1390 code.
5. How can I diagnose the B1390 code on my 2015 Chevrolet Silverado?
Start by checking for blown fuses, inspecting wiring and connectors for damage or corrosion, and testing the battery and alternator to ensure proper voltage levels.
6. Is it safe to drive with a B1390 code on a 2015 Chevrolet Silverado?
While the vehicle may still be drivable, ignoring this code could cause further electrical issues or lead to critical system failures. It's best to address it promptly.
7. What are the repair options for code B1390 in a 2015 Chevrolet Silverado?
Repairs may include replacing a blown fuse, repairing or replacing damaged wiring, cleaning or securing electrical connections, or replacing a faulty control module.
8. How much does it cost to fix the B1390 code on a 2015 Chevrolet Silverado?
The cost depends on the root cause. A simple fuse replacement may cost under $50, while control module repairs or replacements could cost several hundred dollars.
9. Can I clear the B1390 code without fixing the issue?
You can clear the code with an OBDII scanner, but if the underlying issue isn’t resolved, the code will likely return and could cause further problems.
10. Do I need professional help to fix the B1390 code on a 2015 Chevrolet Silverado?
While basic checks like inspecting fuses can be done at home, diagnosing and repairing wiring or control module issues may require professional expertise and diagnostic tools.
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