PCS family
PCS_a094_pcsDcdcNeedService
Power Conversion System requires service
What does the PCS_a094_pcsDcdcNeedService alert mean?
Power conversion system DCDC malfunction detected, PCS service is required
What you'll see in your Tesla
- Power Conversion System requires service
- Schedule service immediately
What triggers it
When 5V logic power rail exceeds 5.8V continuously for more than 1 minute
When it clears
Service alert will latch untill power cycled so will not be cleard at run time
Potential impact
Car unable to start or drive, LV battery and system cannot be supported, AC charging functionality may also be affected
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.