PCS family
PCS_a025_cpu2Malfunction
Unable to AC charge
What does the PCS_a025_cpu2Malfunction alert mean?
PCS is not able to boot CPU2 and AC charging functionality is lost
What you'll see in your Tesla
- Unable to AC charge
- Try DC Fast Charging / Supercharging
What triggers it
Power conversion system was unable to boot CPU2
When it clears
Power conversion system boots CPU2 successfully
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+
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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.