EPASTP family
EPASTP_a042_wdhWdTestFail
Not Available
What does the EPASTP_a042_wdhWdTestFail alert mean?
This alert is reported by the WatchdogHandler_A8140x (WDH) component when the external watchdog of the SBC is not working properly.
What you'll see in your Tesla
- Not Available
What triggers it
EPAS ECU SBC device watchdog is not able to reset the MCU at runtime.
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+
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