B1390 2016 GMC Sierra 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 2016 GMC Sierra 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 2016 GMC Sierra Description
What are the Possible Causes of the DTC B1390 2016 GMC Sierra?
- 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 2016 GMC Sierra?
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 2016 GMC Sierra 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 2016 GMC Sierra Code
1. What are the common symptoms of OBDII code B1390 in a 2016 GMC Sierra?
- Common symptoms include issues with starting the vehicle, rough idling, poor fuel economy, and potential stalling.
2. What does the OBDII code B1390 for Control Module Supply Circuit 1 indicate in a 2016 GMC Sierra?
- This code indicates a problem with the supply circuit of a control module in the vehicle.
3. What are some possible causes of the B1390 OBDII code in a 2016 GMC Sierra?
- Possible causes include a faulty control module, damaged wiring or connectors, a blown fuse, or a malfunctioning power relay.
4. How can I diagnose the B1390 code in my 2016 GMC Sierra?
- Diagnosis typically involves checking the wiring and connectors related to the control module, testing the power supply to the module, and inspecting for any visible damage.
5. Can I drive my 2016 GMC Sierra with the B1390 code present?
- It is not recommended to drive the vehicle with this code as it can lead to further damage and potential safety hazards.
6. How can I repair the Control Module Supply Circuit 1 issue in my 2016 GMC Sierra?
- Repair may involve replacing the faulty control module, repairing damaged wiring or connectors, replacing blown fuses, or addressing any power relay issues.
7. Is it safe to reset the OBDII code B1390 in a 2016 GMC Sierra using a diagnostic tool?
- While resetting the code may temporarily clear the warning light, it is important to address the underlying issue causing the code to prevent further problems.
8. Can a DIY enthusiast fix the B1390 code in a 2016 GMC Sierra?
- Depending on the technical skills and tools available, some DIY enthusiasts may be able to diagnose and repair the issue themselves, but professional assistance is recommended for complex electrical problems.
9. How much does it cost to repair the B1390 code in a 2016 GMC Sierra at a mechanic?
- Repair costs can vary based on the exact cause of the issue, but it is advisable to budget for diagnostic fees, parts replacement costs, and labor charges when visiting a mechanic.
10. Will the B1390 code in a 2016 GMC Sierra cause the vehicle to fail an emissions test?
- Yes, unresolved OBDII codes like B1390 can lead to a failed emissions test as they indicate a malfunction in the vehicle's control systems.
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