AutoCodes – Chevrolet – B0284 Chevrolet

B0284 Chevrolet Code - Electric Rear Defrost Circuit Range/Performance

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: B0284 Chevrolet indicates Electric Rear Defrost Circuit Range/Performance.
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.

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Code Popularity 1,037

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 10, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0284 Chevrolet 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 Chevrolet - Electric Rear Defrost Circuit Range/Performance - AutoCodes.com — B0284 Chevrolet Code - Electric Rear Defrost Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC B0284 Chevrolet?

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

How to Fix the DTC B0284 Chevrolet?

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 B0284 Chevrolet 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.

Need more information about the B0284 Chevrolet code?

Need more information on how to fix the B0284 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0284 Chevrolet Code

1. What are the common symptoms of OBDII code B0284 in a Chevrolet related to the Electric Rear Defrost Circuit Range/Performance?

- Common symptoms include the rear defroster not working properly, rear window not clearing up during defrosting, and potential issues with the defroster switch.

2. What are the possible causes of OBDII code B0284 in a Chevrolet?

- The code B0284 in a Chevrolet can be caused by a faulty rear defrost relay, damaged wiring in the defrost circuit, or a malfunctioning rear window defroster grid.

3. How can I diagnose the Electric Rear Defrost Circuit Range/Performance issue related to OBDII code B0284 in my Chevrolet?

- To diagnose the issue, you can start by checking the rear defrost relay, inspecting the wiring for any damage, and testing the rear window defroster grid for continuity.

4. Are there any simple repair tips for fixing OBDII code B0284 in a Chevrolet?

- You can begin by checking and replacing any blown fuses related to the rear defrost circuit, ensuring proper grounding of the rear defroster grid, and testing the rear defrost relay for functionality.

5. Can weather conditions affect the Electric Rear Defrost Circuit Range/Performance issue in a Chevrolet triggering OBDII code B0284?

- Yes, extreme weather conditions such as very cold temperatures or heavy snow can impact the performance of the rear defroster and contribute to triggering the OBDII code B0284.

6. Is it safe to continue driving my Chevrolet with OBDII code B0284 related to the Electric Rear Defrost Circuit Range/Performance?

- While driving with this code may not cause immediate harm, it is recommended to address the issue promptly as the rear defroster is crucial for visibility, especially in adverse weather conditions.

7. How much does it typically cost to repair OBDII code B0284 in a Chevrolet related to the Electric Rear Defrost Circuit Range/Performance?

- The cost of repairing OBDII code B0284 can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Can I reset the OBDII code B0284 in my Chevrolet by disconnecting the battery?

- Disconnecting the battery may temporarily clear the code, but it is recommended to diagnose and fix the underlying issue to prevent the code from reoccurring.

9. Are there any preventive measures I can take to avoid OBDII code B0284 in my Chevrolet?

- Regularly inspecting the rear defrost circuit for any signs of damage, ensuring proper operation of the rear defroster, and addressing any issues promptly can help prevent the occurrence of OBDII code B0284.

10. Does OBDII code B0284 affect other electrical systems in my Chevrolet?

- While the code specifically relates to the Electric Rear Defrost Circuit Range/Performance, it is essential to monitor other electrical systems for any unusual behavior as electrical issues can sometimes be interconnected.