PCS family
PCS_a068_dcdcTankvRationality
Not Available
What does the PCS_a068_dcdcTankvRationality alert mean?
PCS DCDC tank voltage sensor's DC offset exceeds threshold while DCDC converter is inactive
What you'll see in your Tesla
- Not Available
What triggers it
DCDC converter tank voltage sensor's DC offset exceeds threshold while DCDC converter is inactive
When it clears
DCDC converter tank voltage sensor's DC offset is within threshold while DCDC converter is inactive
Potential impact
Inability to precharge HV bus, inability to support 12V system, inability to drive
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.