FC family
FC_a164_CA_proxDisconnected
Unable to charge with CHAdeMO adapter
What does the FC_a164_CA_proxDisconnected alert mean?
The vehicle is unable to CHAdeMO DC fast charge (FC) because the proximity voltage is not valid.
What you'll see in your Tesla
- Unable to charge with CHAdeMO adapter
- Unplug adapter from station and retry
What triggers it
The FC ECU detects proximity voltage indicating that the charge cable is not fully latched.
When it clears
The FC electronic control unit (ECU) detects proximity voltage indicating that the CHAdeMO adapter is fully latched, or that the charge cable has been disconnected.
Potential impact
DC fast charging is unavailable.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Track your Tesla's alerts automatically
Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.