FC family
FC_a145_CA_flybackDataStale
Charging adapter fault
What does the FC_a145_CA_flybackDataStale alert mean?
The Fast Charge (FC) Electronic Control Unit (ECU) has detected a flyback has been disabled for an extended period.
What you'll see in your Tesla
- Charging adapter fault
- Unplug and retry
What triggers it
FC ECU detects the flyback has been disabled for more than 10 consecutive cycles while in the monitoring or drive states.
When it clears
FC ECU set the flyback target mode to OFF.
Potential impact
Charging session may not start or may become interrupted.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
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