Lost Communication With Active Grille Shutter Module
The U0257 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Active Grille Shutter Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- easy
- Estimated cost
- $200 - $600 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Common Symptoms
- Active grille shutters stuck open or closed
- Slightly higher fuel consumption
- Engine taking longer to warm up
- Grille shutter warning light on
Probable Causes (Ranked by Likelihood)
- Failed grille shutter actuator Very High
- Debris blocking shutter blades High
- CAN bus wiring fault to shutter module Moderate
- Shutter linkage broken Low
Step-by-Step Diagnostic Procedure
-
Inspect grille shutters for debris or ice
-
Check shutter actuator motor
-
Scan shutter module for codes
-
Verify actuator power supply
Frequently Asked Questions
Can I drive with U0257?
Yes. Fuel economy may be slightly reduced. No damage will occur.
What causes U0257?
Usually debris or ice blocking the shutter blades, or a failed actuator motor.
How much does U0257 cost to fix?
Typically $200 to $600. Cleaning debris may fix it for free.
Sources
This page is built from documented references. Verify against your own service info before repair work.
Explore More
Was this helpful?
Share carcodefinder.com with a friend who needs to decode their check engine light.