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Some strange behavior recently on my 2016 XC90 T8. Has anyone else dealt with this before?

Just driving normally on surface roads, the two times this has happened it was on a <10 mile trip where I had switched “Hold” on/off a couple times.

All of a sudden, battery/EV power dies and it switches to ICE. An error message pops up that says “Parking Beale temporarily unavailable” and the ABS warning appears. The check engine light persists. A few seconds later, a “transmission service required” message pops up. Disappears a few minutes later.

The check engine light stays on until I get home, turn off the car, and come back a few hours later and all warning messages and check engine lights are gone.

The second time this happened, I turned off the car fully at the next stop light and turned it on again. But the check engine light was still on. It was gone the next day.
 

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This is where a bluetooth OBDII reader is handy to read the CEL code on spot. Looks like some sensor signal lost sometimes?
 
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