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B1480 2015 GMC Sierra Code - Battery Rundown Protection Circuit

Quick Answer

The B1480 diagnostic trouble code (DTC) in a 2015 GMC Sierra relates to the Battery Rundown Protection Circuit. Common causes include Faulty battery rundown protection module, Wiring issues or shorts in the circuit, Corrosion on electrical connections. 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
B1480 2015 GMC Sierra indicates Battery Rundown Protection Circuit.
Common causes
Common causes include Faulty battery rundown protection module, Wiring issues or shorts in the circuit, Corrosion on electrical connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B1480 2015 GMC Sierra Description

The B1480 diagnostic trouble code (DTC) in a 2015 GMC Sierra relates to the Battery Rundown Protection Circuit. This code indicates a malfunction in the system designed to prevent the battery from being drained excessively when the vehicle is not in use. The Battery Rundown Protection Circuit is crucial for ensuring that the battery retains enough charge to start the vehicle and power essential systems.

OBDII Code B1480 2015 GMC Sierra - Battery Rundown Protection Circuit
B1480 2015 GMC Sierra Code - Battery Rundown Protection Circuit

Common Causes of B1480 2015 GMC Sierra

  1. Faulty battery rundown protection module.
  2. Wiring issues or shorts in the circuit.
  3. Corrosion on electrical connections.
  4. Defective battery.
  5. Issues with the alternator not properly charging the battery.

Symptoms of B1480 2015 GMC Sierra

  1. Difficulty starting the vehicle.
  2. Dim or flickering interior lights.
  3. Electrical components not functioning properly.
  4. Battery draining quickly.
  5. Warning lights on the dashboard related to the battery or electrical system.

How to Fix B1480 2015 GMC Sierra

  1. Begin by checking the battery voltage and ensuring it is within the manufacturer's specifications.
  2. Inspect the battery rundown protection module for any signs of damage or malfunction.
  3. Check the wiring and connections in the circuit for any corrosion or loose connections.
  4. Test the alternator to ensure it is charging the battery correctly.
  5. Replace any faulty components identified during the diagnostic process.

Cost to Fix B1480 2015 GMC Sierra

The cost of repairing the Battery Rundown Protection Circuit can vary depending on the specific cause of the issue. 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 could be anywhere from $150 to $500. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, labor rates, and the extent of the repairs needed. It is recommended to consult with a qualified mechanic 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 B1480 2015 GMC Sierra Code

1. What does the OBDII code B1480 indicate on a 2015 GMC Sierra?

The B1480 code in a 2015 GMC Sierra indicates a malfunction in the battery rundown protection circuit, suggesting that there is an issue with the system designed to prevent the vehicle's battery from draining excessively.

2. What are common symptoms of code B1480 in a 2015 GMC Sierra?

Common symptoms include the battery draining faster than normal, electrical components like interior lights or the radio malfunctioning, and potentially the vehicle failing to start if the battery is depleted.

3. What can cause the B1480 code to appear on a 2015 GMC Sierra?

Causes may include a faulty battery rundown protection relay, issues with the battery itself, problems with the vehicle’s wiring, or a malfunctioning control module.

4. How can I diagnose the cause of a B1480 code in a 2015 GMC Sierra?

Diagnosis should start with checking the vehicle’s battery health and connections, inspecting the battery rundown protection relay and associated wiring, and scanning the vehicle with an OBDII scanner to check for additional diagnostic trouble codes.

5. What steps should be taken to fix the B1480 code in a 2015 GMC Sierra?

Repair steps could include replacing a faulty battery, repairing or replacing damaged wiring, replacing a defective battery rundown protection relay, or reprogramming or replacing the control module if necessary.

6. Will driving a 2015 GMC Sierra with the B1480 code cause further vehicle damage?

Continuing to drive with this code can lead to a completely drained battery, which might result in the vehicle not starting or the loss of functionality in critical safety systems, potentially increasing the risk of an accident.

7. Is it safe to ignore the B1480 code on a 2015 GMC Sierra?

It is not advisable to ignore this code, as it indicates an issue that could lead to a completely drained battery, possibly leaving you stranded or leading to further electrical system issues.

8. How urgent is it to address the B1480 code in a 2015 GMC Sierra?

It is moderately urgent to address this issue to avoid inconvenience and potential safety risks associated with a drained battery or malfunctioning electrical systems.

9. Can a weak or old battery cause the B1480 code in a 2015 GMC Sierra?

Yes, a weak or old battery can trigger this code as it might not hold charge effectively, leading to issues with the battery rundown protection system detecting an abnormal drain.

10. What tools are needed to diagnose and repair the B1480 code in a 2015 GMC Sierra?

Tools required include a digital multimeter for testing electrical connections and voltages, an OBDII scanner for reading and clearing codes, and possibly a battery tester to evaluate the health of the battery.

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