FC family
FC_a149_CA_pcb_UT
Charging adapter fault
What does the FC_a149_CA_pcb_UT 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 under the expected temperature.
What you'll see in your Tesla
- Charging adapter fault
- Unplug and retry
What triggers it
The FC ECU detects that the CHAdeMO adapter PCB temperature is under the alert threshold.
When it clears
The FC ECU detects that the CHAdeMO adapter PCB temperature is within expected bounds, or the charge cable is 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.