Lost Communication With Heated Windshield Control Module
The U0231 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Heated Windshield Control Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $200 - $800 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Heated windshield not functioning
- Windshield defrost takes longer than normal
- Heated windshield indicator light off
- No response from heated windshield button
Probable Causes (Ranked by Likelihood)
- Failed heated windshield module Very High
- Broken heated windshield element High
- CAN bus wiring fault to module Moderate
- Blown heated windshield fuse Low
Step-by-Step Diagnostic Procedure
-
Check heated windshield fuse
-
Test power supply to heated windshield module
-
Scan module for diagnostic codes
-
Inspect windshield heating element connections
Frequently Asked Questions
Can I drive with U0231?
Yes. Only the heated windshield feature is affected. Use the regular defroster instead.
What causes U0231?
Usually a failed heated windshield module or blown fuse. Cracked windshield elements are also possible.
How much does U0231 cost to fix?
Typically $200 to $800. Fuse replacement is cheap but windshield replacement is expensive.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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