B0284 - Electric Rear Defrost Circuit Range/Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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B0284 Possible Causes

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

How do I fix code B0284

    Check 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.

Cost of diagnosing the B0284 code

    Labor: 1.0

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

B0284 Possible Symptoms

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

B0284 Description

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.
OBDII Code B0284 - Electric Rear Defrost Circuit Range/Performance - AutoCodes.com

B0284 More Information

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B0284 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

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