Engine-CodesGMC – B1328 2014 GMC Sierra

B1328 2014 GMC Sierra Code - Device Power Circuit High

Quick Answer

The B1328 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the device power circuit being too high. Common causes include Faulty power supply to the affected device, Wiring or connection issues in the device power 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
B1328 2014 GMC Sierra indicates Device Power Circuit High.
Common causes
Common causes include Faulty power supply to the affected device, Wiring or connection issues in the device power 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.
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code B1328 2014 GMC Sierra Description

The B1328 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the device power circuit being too high. This code is typically associated with issues related to the power supply to various electronic devices or modules in the vehicle. The device power circuit is responsible for providing power to various components such as sensors, control modules, and other electronic devices that are essential for the proper functioning of the vehicle's systems.

OBDII Code B1328 2014 GMC Sierra - Device Power Circuit High
B1328 2014 GMC Sierra Code - Device Power Circuit High

Common Causes of B1328 2014 GMC Sierra

  1. Faulty power supply to the affected device
  2. Wiring or connection issues in the device power circuit
  3. Malfunctioning control module
  4. Short circuits in the electrical system
  5. Battery or alternator problems

Symptoms of B1328 2014 GMC Sierra

  1. Check engine light illuminated on the dashboard
  2. Erratic behavior of electronic components (e.g., radio, power windows, etc.)
  3. Issues with the vehicle's HVAC system
  4. Problems with the vehicle's transmission shifting
  5. Reduced fuel efficiency

How to Fix B1328 2014 GMC Sierra

  1. Begin by conducting a thorough inspection of the device power circuit and related components to identify the root cause of the high voltage issue.
  2. Test the power supply to the affected device and check for any irregularities in voltage levels.
  3. Inspect the wiring and connections in the device power circuit for any signs of damage or corrosion, and repair or replace as necessary.
  4. Check the control modules and other electronic components for proper functioning and replace any faulty parts.
  5. Clear the DTC from the vehicle's computer system and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix B1328 2014 GMC Sierra

The typical repair costs for addressing a B1328 DTC can vary depending on the specific cause of the issue and the parts and labor required for the repair. In general, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $500. However, it's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the specific diagnosis and repair process required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1328 2014 GMC Sierra Code

1. What does the OBDII code B1328 mean on a 2014 GMC Sierra?

The B1328 code indicates a "Device Power Circuit High" fault, meaning there is an issue with excessive voltage in a specific power circuit.

2. What are the common symptoms of the B1328 code on a 2014 GMC Sierra?

Symptoms may include warning lights on the dashboard, malfunctioning accessories or electrical components, and intermittent power issues.

3. What causes the B1328 code to appear on a 2014 GMC Sierra?

Common causes include a short to power, faulty wiring, damaged connectors, or a malfunctioning control module.

4. Can a blown fuse cause the B1328 code on a 2014 GMC Sierra?

No, a blown fuse typically causes a loss of power, not a high-voltage condition, but a damaged circuit associated with the fuse could contribute to the issue.

5. How do I diagnose the B1328 code on my 2014 GMC Sierra?

Use a multimeter to check for excessive voltage in the affected circuit, inspect wiring and connectors for damage, and verify the operation of related control modules.

6. Can a bad battery cause the B1328 code on a 2014 GMC Sierra?

It’s unlikely, but an overcharging alternator or incorrect voltage regulation could contribute to the high voltage condition.

7. Is it safe to drive with the B1328 code on a 2014 GMC Sierra?

Driving with this code is not recommended, as high voltage in a circuit could damage electrical components or cause further issues.

8. How much does it cost to fix the B1328 code on a 2014 GMC Sierra?

The repair cost varies depending on the cause, but it typically ranges from $50 for minor wiring repairs to over $500 if a control module needs replacement.

9. Can I clear the B1328 code without fixing the issue?

Clearing the code with a scanner may temporarily remove it, but the problem will likely return until the underlying issue is resolved.

10. What tools are needed to fix the B1328 code on a 2014 GMC Sierra?

You’ll need a diagnostic scanner, a multimeter, and basic tools for inspecting and repairing wiring or connectors.

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