PCS2 family
PCS2_a149_buckBoostFault
Not Available
What does the PCS2_a149_buckBoostFault alert mean?
The Power Conversion System (PCS) is unable to regulate internal voltage rails.
What you'll see in your Tesla
- Not Available
What triggers it
The buck-boost converter did not reach the desired voltage.
When it clears
The buck-boost converter voltage reaches the desired voltage.
Potential impact
DCDC and AC Charging may be limited or unavailable.
Affected models
Model 3 2017-2023
Model 3 2024+
Model Y
Model Y 2025+
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