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Model Y

EPASTP_a122 — Pcp Bridge Fet Short

Full alert identifier: EPASTP_a122_pcpBridgeFetShort

Alert description

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.

Potential impact

EPAS full loss of assist

Set condition

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

Clear condition

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

Signals to check

These diagnostic fields are associated with EPASTP_a122. Check the alert's Payload in Service Mode Plus for available values.

Signal Unit
Debug Info EPASTP_a122_debugInfo —

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of EPASTP_a122.

Browse all EPASTP alert codes