Engine-Codes - Buick - B0285 Buick

B0285 Buick Code - Electric Rear Defrost Circuit Low

- Code Popularity: 627 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC B0285 Buick?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Liftgate Module (LGM)
  • Liftgate Module (LGM) harness is open or shorted
  • Liftgate Module (LGM) circuit poor electrical connection
⚠ Does your Buick have Safety Recalls? → Check here

How to Fix the DTC B0285 Buick?

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 pins.

Search for B0285 Buick Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B0285 Buick code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B0285 Buick Code Mean?

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.

B0285 Buick Code - Electric Rear Defrost Circuit Low

Need more Information on the Code?

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

Need Help with the Code?

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