Engine-Codes - Generic - B0285

B0285 Code - Electric Rear Defrost Circuit Low

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

|B0285 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 B0285 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 B0285 code

Labor: 1.0

The cost to diagnose the B0285 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 B0285 code possible symptoms?

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

|What is B0285 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 B0285 code?

Need more information on how to fix the B0285 code?
Get Access to Factory Service Manuals

|B0285 code information for specific makes

|Need help with a B0285 code?

Get the B0285 code diagnosed by a professional: Find a repair shop in your area