Lost Communication With Vehicle-to-Grid Module
The U0226 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Vehicle-to-Grid Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- hard
- Estimated cost
- $500 - $2,000 (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
- V2G bidirectional charging not available
- Cannot export power to grid
- Vehicle-to-home feature disabled
- V2G status indicator off
Probable Causes (Ranked by Likelihood)
- Failed V2G module Very High
- Incompatible V2G charger High
- CAN bus wiring fault to V2G module Moderate
- Software compatibility issue Low
Step-by-Step Diagnostic Procedure
-
Verify V2G charger compatibility
-
Scan V2G module for fault codes
-
Test CAN bus communication at V2G module
-
Check for software updates
Frequently Asked Questions
Can I drive with U0226?
Yes. Only V2G is affected. Normal driving and charging work fine.
What causes U0226?
Often a charger compatibility issue or module failure.
Is V2G important?
V2G lets your EV send power to the grid or home. Support varies by vehicle and charger.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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