PCS family
PCS_a027_chgInsufficientCooling
Not Available
What does the PCS_a027_chgInsufficientCooling alert mean?
PCS does not detect coolant flowing
What you'll see in your Tesla
- Not Available
What triggers it
Charger detects that coolant flow is insufficient
When it clears
Charge cable is removed or inserted or battery management system issues clear fault request
Potential impact
Inability to AC charge
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.