UMC_a006_contactorWelded
Unable to charge - Mobile Connector error
What does the UMC_a006_contactorWelded alert mean?
UMC detected contactor stuck open or closed
What you'll see in your Tesla
- Unable to charge - Mobile Connector error
- Unplug from wall outlet and retry
What triggers it
UMC contactor is open when it should be closed (non-EU smart adapter) or closed when it should be open for several seconds
When it clears
UMC contactor is in the expected state for several seconds
Potential impact
UMC will not allow charging if the contactor is stuck in an unexpected state. Charge handle pins may be live and hazardous. Stuck open (non-hazardous) contactors will not trigger this fault with EU smart adapters.
Affected models
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