Lost Communication With EV Charge Timer Module
The U0224 code means the vehicle's onboard diagnostic system has detected: Lost Communication With EV Charge Timer Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- easy
- Estimated cost
- $100 - $500 (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
- Scheduled charging not working
- Charge timer settings lost after restart
- Cannot set departure time for charging
- Charging starts immediately instead of scheduled
Probable Causes (Ranked by Likelihood)
- Software glitch in charge timer module Very High
- CAN bus communication error High
- Failed charge timer module Moderate
- 12V battery voltage drop causing reset Low
Step-by-Step Diagnostic Procedure
-
Reset charge timer settings and retry
-
Check for software updates
-
Verify 12V battery voltage
-
Scan charge timer module for fault codes
Frequently Asked Questions
Can I drive with U0224?
Yes. Only scheduled charging is affected. Manual charging still works.
What causes U0224?
Usually a software glitch. Try resetting the system or updating software.
Is U0224 serious?
No. It is a convenience feature issue only.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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