FC family
FC_w257_GB_bmsMia
Charging adapter fault
What does the FC_w257_GB_bmsMia alert mean?
The vehicle is unable to begin GB (China) DC fast charging because the fast charge (FC) electronic control unit (ECU) detects that the battery management system (BMS) is unavailable (MIA).
What you'll see in your Tesla
- Charging adapter fault
- Unplug and retry
What triggers it
The FC ECU does not receive the expected CAN messages from the BMS within a certain time frame.
When it clears
The FC ECU receives the expected controller area network (CAN) messages from the BMS.
Potential impact
DC fast charging is unavailable.
Affected models
Model S 2012-2020
Model X 2015-2020
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