CP family
CP_a103_proximityPeDisconnected
Charge port requires service
What does the CP_a103_proximityPeDisconnected alert mean?
The charge port (CP) electronic control unit (ECU) detects that the protective earth connection may be missing.
What you'll see in your Tesla
- Charge port requires service
- Charging may be unavailable
What triggers it
The CP ECU detects proximity voltage greater than 4.75V for more than 100ms.
When it clears
The CP ECU detects proximity voltage in the disconnected range for more than 200ms.
Potential impact
Charging does not start.
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.