Engine-Codes - Generic - B0284

B0284 Code - Electric Rear Defrost Circuit Range/Performance

Repair Importance Level: 1/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

|B0284 code possible causes

  • Faulty Liftgate Module (LGM)
  • Liftgate Module (LGM) harness is open or shorted
  • Liftgate Module (LGM) circuit poor electrical connection

|How is the B0284 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 B0284 code

Labor: 1.0

The cost to diagnose the B0284 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B0284 code possible symptoms?

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

|What is B0284 code meaning?

The Liftgate Module (LGM) monitors the voltage level on the supply voltage circuit of the rear window defogger. The LGM test the supply voltage circuit of the rear window defogger every 160 milliseconds. With the rear window defogger inactive, the supply voltage circuit of the rear window defogger will have no voltage present. With the rear window defogger active, the supply voltage circuit of the rear window defogger will be near system voltage.

|Need more information with the B0284 code?

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|B0284 code information for specific makes

  • B0284 BUICK Electric Rear Defrost Circuit Range/Performance
  • B0284 CADILLAC Electric Rear Defrost Circuit Range/Performance
  • B0284 CHEVROLET Electric Rear Defrost Circuit Range/Performance
  • B0284 GMC Electric Rear Defrost Circuit Range/Performance

|Need help with a B0284 code?

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