PCS family
PCS_a033_hvBusUv
Not Available
What does the PCS_a033_hvBusUv alert mean?
PCS DCDC detects pack voltage is lower than the safety threshold to continue its 12V support operation
What you'll see in your Tesla
- Not Available
What triggers it
DCDC converter detects that high voltage bus voltage is below undervoltage threshold
When it clears
DCDC converter state machine clears faults
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+
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