AutoCodes – GMC – B1480 2015 GMC Sierra

B1480 2015 GMC Sierra Code - Battery Rundown Protection Circuit

Quick Answer

The Body Control Module (BCM) supplies battery voltage to the front and rear reading lamps, left and right sunshade lamps, center console compartment lamp, and instrument panel compartment lamp via the courtesy lamp control circuit. Common causes include Faulty Lamp, Lamp harness is open or shorted, Lamp circuit poor electrical connection. 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 Lamp, Lamp harness is open or shorted, Lamp circuit poor electrical connection.
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 Popularity 193

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 20, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1480 2015 GMC Sierra Description

The Body Control Module (BCM) supplies battery voltage to the front and rear reading lamps, left and right sunshade lamps, center console compartment lamp, and instrument panel compartment lamp via the courtesy lamp control circuit. When the instrument panel compartment, center console armrest, or sunshade mirror is opened, the switch contacts close allowing battery voltage to flow illuminating the respective lamps. The front and rear reading lamps are controlled by individual switches that are activated by the occupants when additional cabin lighting is required. In the event that any of these courtesy lamps were to remain illuminated for more than 10 min with the ignition switch in the OFF position, the BCM will deactivate the courtesy lamp control circuit to prevent total battery discharge. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a fault in the courtesy lamps control circuit.

OBDII Code B1480 2015 GMC Sierra - Battery Rundown Protection Circuit - AutoCodes.com — B1480 2015 GMC Sierra Code - Battery Rundown Protection Circuit

What does this mean?

What are the Possible Causes of the DTC B1480 2015 GMC Sierra?

Faulty Lamp
Lamp harness is open or shorted
Lamp circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1480 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 B1480 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.

Need more information about the B1480 2015 GMC Sierra code?

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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 vehicleâ€™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 vehicleâ€™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.