B1327 2015 GMC Sierra Code - Device Power 1 Circuit Low
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
- B1327 2015 GMC Sierra indicates Device Power 1 Circuit Low.
- 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 B1327 2015 GMC Sierra Description
What are the Possible Causes of the DTC B1327 2015 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 B1327 2015 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 B1327 2015 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 B1327 2015 GMC Sierra Code
1. What does the OBDII code B1327 mean on a 2015 GMC Sierra?
The code B1327 indicates a "Device Power 1 Circuit Low," meaning the vehicle's control module has detected a low voltage condition in a specific circuit.
2. What are the common symptoms of code B1327 in a 2015 GMC Sierra?
Common symptoms include malfunctioning electrical components, intermittent power issues, dashboard warning lights, or failure of certain devices to operate.
3. What causes the B1327 code to appear on a GMC Sierra?
Possible causes include a weak battery, loose or corroded wiring or connections, a faulty control module, or a blown fuse in the affected circuit.
4. How do I diagnose the B1327 code in my 2015 GMC Sierra?
Use a multimeter to check for proper voltage in the affected circuit, inspect wiring and connectors for damage or corrosion, and test the battery and alternator for proper output.
5. Can driving with the B1327 code cause further damage?
Yes, ignoring this code can lead to electrical failures, reduced functionality of certain systems, and potential damage to components reliant on proper voltage.
6. What should I do first to fix the B1327 code in a GMC Sierra?
Start by checking the battery voltage, inspecting all wiring and connectors in the involved circuit, and ensuring all grounds are secure and free of corrosion.
7. Can a bad alternator cause the B1327 code?
Yes, a failing alternator can result in low voltage, which may trigger the B1327 code. Testing the alternator output is recommended.
8. Does the B1327 code always indicate a faulty control module?
Not necessarily; while a control module fault is possible, the issue is often caused by wiring, battery, or alternator problems.
9. How much does it cost to repair the B1327 code on a 2015 GMC Sierra?
Repair costs vary depending on the cause. Common fixes like replacing corroded wiring or a bad fuse may cost $50-$100, while a new alternator or battery could cost $200-$500.
10. Can I clear the B1327 code without fixing the issue?
You can clear the code with an OBDII scanner, but it will likely return if the underlying issue isn’t resolved.
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