garajizOBD-II code · generic
U3034
Communication Authentication Key/Certificate Missing/Invalid
- System
- U — In-vehicle network
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does U3034 mean?
U3034 is defined as “Communication Authentication Key/Certificate Missing/Invalid”.
Drive gently and only as far as you need to; have it checked as soon as possible.
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This page is general information; an exact diagnosis needs measurements and a technician’s check.