FC family
FC_w143_CA_pcb_OT
Charging adapter temperature high
What does the FC_w143_CA_pcb_OT alert mean?
CHAdeMO DC fast charging is unavailable because the fast charge (FC) electric control unit (ECU) detects that the printed circuit board (PCB) is over the expected temperature.
What you'll see in your Tesla
- Charging adapter temperature high
- DC Fast Charging / Supercharging unavailable
What triggers it
The FC ECU detects that the CHAdeMO adapter PCB temperature is over the alert threshold.
When it clears
The FC ECU detects that the CHAdeMO charge cable PCB temperature is within expected bounds, or the charge cable is disconnected.
Potential impact
DC fast charging is unavailable.
Affected models
Model S 2012-2020
Model X 2015-2020
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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.