AutoCodes – Generic – B1480

B1480 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 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 9,122

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 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 - Battery Rundown Protection Circuit - AutoCodes.com — B1480 Code - Battery Rundown Protection Circuit

What does this mean?

What are the Possible Causes of the DTC B1480?

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

How to Fix the DTC B1480?

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 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 code?

Need more information on how to fix the B1480 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1480 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1480 Buick — Battery Rundown Protection Circuit
B1480 Cadillac — Battery Rundown Protection Circuit
B1480 Chevrolet — Battery Rundown Protection Circuit
B1480 GMC — Battery Rundown Protection Circuit
B1480 Hyundai — Passenger Curtain Airbag Circuit Short To Battery
B1480 KIA — Passenger Curtain Airbag Circuit Short To Battery

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 Code

1. What are the common symptoms of OBDII code B1480 (Battery Rundown Protection Circuit)?

The common symptoms of OBDII code B1480 include a discharged battery, difficulty starting the vehicle, and issues with the electrical systems.

2. What are the possible causes of OBDII code B1480?

The possible causes of OBDII code B1480 include a faulty battery rundown protection circuit, a malfunctioning control module, wiring issues, or a drained battery due to prolonged vehicle inactivity.

3. How can I diagnose OBDII code B1480?

Diagnosing OBDII code B1480 involves using a diagnostic scanner to retrieve the code, checking the battery rundown protection circuit for faults, inspecting the wiring for any damage, and testing the control module for proper operation.

4. Can I still drive my vehicle with OBDII code B1480?

It is not recommended to drive your vehicle with OBDII code B1480, as it can lead to a discharged battery and potential issues with starting the vehicle. It is best to address the underlying problem as soon as possible.

5. How can I repair OBDII code B1480?

Repairing OBDII code B1480 may involve replacing the faulty battery rundown protection circuit, repairing any damaged wiring, resetting the control module, or charging/replacing the battery if necessary.

6. Is OBDII code B1480 a serious issue?

While OBDII code B1480 may not affect the drivability of the vehicle, it can lead to a drained battery and inconvenience. It is important to address the issue promptly to avoid potential starting or electrical problems.

7. How long does it take to repair OBDII code B1480?

The time it takes to repair OBDII code B1480 can vary depending on the exact cause of the issue. Simple fixes like resetting the control module may take a short time, while replacing components or diagnosing wiring problems may require more time.

8. Can OBDII code B1480 be a recurring issue?

OBDII code B1480 can be a recurring issue if the underlying cause is not properly addressed. Regular maintenance and inspection of the battery rundown protection circuit can help prevent the code from reoccurring.

9. Are there any DIY fixes for OBDII code B1480?

Some DIY fixes for OBDII code B1480 may include checking and cleaning the battery terminals, ensuring a secure connection to the battery, or resetting the control module. However, more complex issues may require professional diagnosis and repair.

10. How much does it cost to fix OBDII code B1480?

The cost to fix OBDII code B1480 can vary depending on the specific repairs needed, the labor rates of the repair shop, and the cost of any replacement parts. It is recommended to obtain estimates from different shops to compare prices.