B1380 2018 GMC Sierra Code - Control Module Ignition Accessory Circuit
Quick Answer
The B1380 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Control Module Ignition Accessory Circuit. Common causes include Faulty ignition switch, Damaged wiring or connectors in the ignition accessory circuit, Malfunctioning control module. 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
- B1380 2018 GMC Sierra indicates Control Module Ignition Accessory Circuit.
- Common causes
- Common causes include Faulty ignition switch, Damaged wiring or connectors in the ignition accessory circuit, Malfunctioning control module.
- 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.
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Code B1380 2018 GMC Sierra Description
The B1380 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Control Module Ignition Accessory Circuit. This code indicates that there is a malfunction in the circuit responsible for providing power to the ignition accessory functions of the vehicle. The ignition accessory circuit is crucial for powering components such as the radio, power windows, and interior lights when the vehicle is in the accessory or on position. When this circuit is compromised, it can lead to various issues affecting the functionality of these accessories.
Common Causes of B1380 2018 GMC Sierra
- Faulty ignition switch
- Damaged wiring or connectors in the ignition accessory circuit
- Malfunctioning control module
- Blown fuse related to the circuit
Symptoms of B1380 2018 GMC Sierra
- Inoperative radio or infotainment system
- Power windows not functioning
- Interior lights not turning on
- Vehicle failing to start
- Battery draining quickly
How to Fix B1380 2018 GMC Sierra
- Perform a thorough inspection of the ignition accessory circuit, including wiring, connectors, and fuses.
- Test the ignition switch for proper functionality and replace if necessary.
- Check the control module for any signs of damage or malfunction and replace if needed.
- Repair or replace any damaged wiring or connectors in the circuit.
- Clear the DTC and test the affected accessories to ensure proper operation.
Cost to Fix B1380 2018 GMC Sierra
The typical repair costs for addressing a B1380 code on a 2018 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair for this type of problem can range from $150 to $500, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to contact local shops for a more accurate estimate based on your location and vehicle specifics.
Tech Notes for B1380 2018 GMC Sierra
B1380:04 Control Module Ignition Accessory Circuit Short to Ground or Open
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Frequently Asked Questions about B1380 2018 GMC Sierra Code
1. What does the OBDII code B1380 mean on a 2018 GMC Sierra?
The code B1380 indicates an issue with the Control Module Ignition Accessory Circuit, which may involve a fault in the wiring, connectors, or control module itself.
2. What are the common symptoms of the B1380 code in a 2018 GMC Sierra?
Symptoms may include accessories like the radio or power windows not working, the ignition not turning on properly, or intermittent electrical issues.
3. What causes the B1380 code to appear?
This code can be caused by a faulty ignition switch, damaged wiring or connectors in the accessory circuit, or a malfunction in the control module.
4. Can I drive my 2018 GMC Sierra with the B1380 code active?
While the vehicle may still be drivable, electrical functions like accessories or ignition operation could be compromised, so it's best to address the issue promptly.
5. How is the B1380 code diagnosed?
A technician will inspect the accessory circuit wiring and connectors, test the ignition switch, and check the control module for faults using a scan tool and a multimeter.
6. What repairs can fix the B1380 code?
Repairs might include replacing a faulty ignition switch, repairing damaged wires or connectors, or reprogramming or replacing the control module.
7. How much does it cost to fix the B1380 code on a 2018 GMC Sierra?
Repair costs vary but may range from $100 to $500 depending on whether the issue is a simple wiring repair or a control module replacement.
8. Can a weak battery cause the B1380 code?
Yes, a weak or failing battery can sometimes trigger electrical issues, including accessory circuit faults, so checking the battery is recommended.
9. What tools are needed to troubleshoot the B1380 code?
Common tools include a scan tool to read the code, a multimeter for electrical testing, and wiring diagrams specific to the 2018 GMC Sierra.
10. Does the B1380 code require reprogramming the control module?
In some cases, if the control module is faulty or replaced, it may require reprogramming using specialized equipment to resolve the code.
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