PCS family
PCS_a030_canRationality
Not Available
What does the PCS_a030_canRationality alert mean?
PCS CAN receiver encounters error while receiveing message
What you'll see in your Tesla
- Not Available
What triggers it
Power conversion system CAN receiver encounters error while receiveing message
When it clears
Power conversion system CAN receiver does not detect any errors for more than five seconds
Potential impact
Inability to AC charge, inability to precharge HV bus, inability to support 12V system, inability to drive
Affected models
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.