PCS family
PCS_a058_chgInputUnderFreq
Not Available
What does the PCS_a058_chgInputUnderFreq alert mean?
PCS charging input under-frequency
What you'll see in your Tesla
- Not Available
What triggers it
Charger AC input frequency is below minimum frequency threshold for more than one second
When it clears
Charger AC input frequency exceeds minimum frequency threshold
Potential impact
Reduced AC charge rate or inability to AC charge
Affected models
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
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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.