MyTeslaMate
EPASTS family

EPASTS_a122_pcpBridgeFetShort

Not Available

What does the EPASTS_a122_pcpBridgeFetShort alert mean?

This alert is reported by the PhaseCurrentProvider_R12 (PCP) component if both primary and secondary current measurement channels are in saturation state and the debounce counter reaches its limit. If both current measurement channels are saturated, we assume that there is a shorted FET in the bridge. This diagnostic signals it.

What you'll see in your Tesla

  • Not Available

What triggers it

EPAS bridge FET short failure. Primary and secondary current measurement channels are in saturation state for longer than a tolerated time.

When it clears

EPAS HW failure. EPAS power cycle N times and if persists, the gear needs to be changed.

Potential impact

EPAS full loss of assist

Affected models

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.