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U0284: Lost Communication With Active Grille Air Shutter Module A

Severity
Low
NHTSA Reports
1
Vehicles Affected
1
System
Powertrain

What Does U0284 Mean?

U0284 is a diagnostic trouble code indicating: Lost Communication With Active Grille Air Shutter Module A. This code relates to the network communication system. It has been reported in NHTSA complaints across 1 different vehicle models.

Symptoms of U0284

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"Automatic engine shutoff did not restart at a busy stop light. Car shut down. Had to tow my car to auto repair. Computer code error U0284,B2575. Engine Stalls. Fixed the problem and 10 days later, I am driving and the car stops in the middle of the road again. Diagnosis is the same reason that the c"

— Chevrolet Equinox owner, 06/07/2021

Source: NHTSA Complaints Database

Most Reported Vehicles for U0284

Based on NHTSA owner complaint data.

# Vehicle Reports
1 CHEVROLET EQUINOX

Frequently Asked Questions

Can I drive with this code?
It depends on the severity. If the vehicle runs normally, short trips are usually OK. If you notice performance issues, drivability problems, or warning lights beyond the check engine light, get it checked soon.
Will this code clear itself?
Some codes clear automatically after the underlying issue is fixed and several drive cycles pass. But the root cause must be addressed first.
How do I find the exact cause?
A code alone doesn't pinpoint the failed part. You need a diagnostic scan ($50-150 at most shops) that reads freeze frame data and live sensor readings to identify the specific component.

What To Do Next

Possible Fixes

  • 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
  • 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

U0200 Lost Communication With Door Control Module B U0201 Lost Communication With Door Control Module C U0202 Lost Communication With Door Control Module D U0203 Lost Communication With Door Control Module E U0204 Lost Communication With Door Control Module F U0205 Lost Communication With Door Control Module G U0206 Lost Communication With Folding Top Control Module U0207 Lost Communication With Moveable Roof Control Module A U0208 Lost Communication With Seat Control Module A U0209 Lost Communication With Seat Control Module B