B0287 Code - Electric Rear Defrost Circuit Open
Quick Answer
The Liftgate Module (LGM) monitors the voltage level on the supply voltage circuit of the rear window defogger. Common causes include Faulty Liftgate Module (LGM), Liftgate Module (LGM) harness is open or shorted, Liftgate Module (LGM) circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B0287 indicates Electric Rear Defrost Circuit Open.
- Common causes
- Common causes include Faulty Liftgate Module (LGM), Liftgate Module (LGM) harness is open or shorted, Liftgate Module (LGM) circuit poor electrical connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B0287 Description
What are the Possible Causes of the DTC B0287?
- Faulty Liftgate Module (LGM)
- Liftgate Module (LGM) harness is open or shorted
- Liftgate Module (LGM) circuit poor electrical connection
How to Fix the DTC B0287?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B0287 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Get the B0287 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B0287 Buick — Electric Rear Defrost Circuit Open
- B0287 Cadillac — Electric Rear Defrost Circuit Open
- B0287 Chevrolet — Electric Rear Defrost Circuit Open
- B0287 GMC — Electric Rear Defrost Circuit Open
Frequently Asked Questions about B0287 Code
1. What are the common symptoms of OBDII code B0287 - Electric Rear Defrost Circuit Open?
- The common symptoms include the rear defrost not working, rear window not clearing of frost or fog, and a warning light on the dashboard.
2. What can cause the OBDII code B0287 to trigger?
- The code B0287 is triggered when the vehicle's onboard diagnostic system detects an open circuit in the electric rear defrost system, which could be caused by a damaged defrost grid, wiring issues, or a faulty defrost relay.
3. How can I diagnose the Electric Rear Defrost Circuit Open issue?
- Diagnosing the issue involves visually inspecting the defrost grid on the rear window for damage, checking the wiring connections for any breaks or corrosion, and testing the defrost relay for proper operation.
4. Can I still drive my vehicle with the OBDII code B0287 present?
- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper visibility through the rear window, especially in cold or rainy conditions.
5. How can I repair the Electric Rear Defrost Circuit Open problem?
- Repairing the issue may involve repairing or replacing the damaged defrost grid, repairing any broken or corroded wiring, or replacing the faulty defrost relay. It is recommended to follow the manufacturer's repair procedures.
6. Are there any DIY tips for fixing the Electric Rear Defrost Circuit Open issue?
- DIY tips include carefully inspecting the defrost grid for visible damage, checking and repairing any loose or corroded wiring connections, and testing the defrost relay with a multimeter for continuity.
7. Will resetting the OBDII code B0287 make the problem go away?
- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the circuit open is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause of the problem.
8. Can extreme weather conditions contribute to the Electric Rear Defrost Circuit Open problem?
- Yes, extreme cold temperatures or exposure to moisture can lead to damage in the defrost grid or wiring, increasing the likelihood of an open circuit and triggering the OBDII code B0287.
9. How much does it typically cost to repair the Electric Rear Defrost Circuit Open issue?
- The cost of repair can vary depending on the extent of the damage and whether parts need to be replaced. On average, repairing the electric rear defrost circuit open issue can range from $100 to $300 including parts and labor.
10. Is it necessary to visit a mechanic for the repair, or can I fix the Electric Rear Defrost Circuit Open problem myself?
- Depending on your skill level and access to tools, you may be able to fix the issue yourself by following the manufacturer's repair manual. However, if you are unsure or uncomfortable with the repair process, it is recommended to seek the help of a qualified mechanic.
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