PCS family
PCS_a050_dcdc12VsupportFaulted
Not Available
What does the PCS_a050_dcdc12VsupportFaulted alert mean?
DCDC converter 12V support has faulted
What you'll see in your Tesla
- Not Available
What triggers it
DCDC converter 12V support has faulted
When it clears
DCDC converter state machine clears faults
Potential impact
Inability to support 12V system
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.