PCS family
PCS_a055_chgLineImpedanceHigh
Charge rate reduced - Unexpected voltage drop
What does the PCS_a055_chgLineImpedanceHigh alert mean?
Charging derated due to high measured grid impedance (impedance detection algorithmn)
What you'll see in your Tesla
- Charge rate reduced - Unexpected voltage drop
- Remove extension cords / Have wiring inspected
What triggers it
TBD - not yet implemented
When it clears
TBD - not yet implemented
Potential impact
TBD - not yet implemented
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.