Engine-Codes - Gmc - B1480 GMC

B1480 GMC - Battery Rundown Protection Circuit Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B1480 GMC Possible Causes

  • Faulty Inadvertent Power Relay
  • Inadvertent Power Relay harness is open or shorted
  • Inadvertent Power Relay circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How is the B1480 GMC code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the B1480 GMC code

Labor: 1.0

The cost to diagnose the B1480 GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B1480 GMC Meaning

The Battery Rundown Protection function allows the Body Control Module (BCM) to disable courtesy lights, cargo lights and underhood light 40 minutes after the ignition is turned off. The BCM monitors the output of the inadvertent power relay. When BCM commands the Inadvertent Power Relay on and there is no voltage at BCM connector 0.5 seconds, Diagnostic Trouble Code (DTC) will be set. DTC will not set if system voltage is not 9-16 volts. When DTC is set, courtesy lights, cargo lights, and underhood light will be disabled.

More Information

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

Need more help?

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