CP family
CP_a139_pilotFaulted
Charging equipment reports error
What does the CP_a139_pilotFaulted alert mean?
An electric vehicle supply equipment (EVSE) using pulse width modulation (PWM) pilot reports that it has encountered an issue.
What you'll see in your Tesla
- Charging equipment reports error
- Check equipment for error code or message
What triggers it
The EVSE sets the legacy pilot to the faulted state.
When it clears
The legacy pilot is no longer in the faulted state, or the charge cable is disconnected.
Potential impact
Charging does not start or is interrupted.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Semitruck
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.