MyTeslaMate
PCS2REXA family

PCS2REXA_a149_buckBoostFault

Not Available

What does the PCS2REXA_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 DCAC may be limited or unavailable.

Affected models

Cybertruck

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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.