PCS family
PCS_a045_hvBusLowImpedance
Not Available
What does the PCS_a045_hvBusLowImpedance alert mean?
PCS detects the HV bus impedance is lower than the expected value
What you'll see in your Tesla
- Not Available
What triggers it
DCDC converter detects low impedance on HV bus when precharging (short circuit or capacitance too high)
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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