02 outback H6 engine dies all dash lights on, pull to stop and restarts fine

Do not relay on guesses you are bound to receive - that is simply wasted time and money!

That is ‘one’ of many possibilities - however it’s going to take a good while before the “results” can be observed : [ How long have you had this problem? “Twice in the last 2 months” ]

Possibly, but I like to do this as follows: Disconnect sensor from intake hose..(so vrhicle doesnt stall during procedure. Then spray a particular product through intake after a static cleaning of the valve. Keep engine around 2K rpm, and spray so intake stream will clean off most of the inside of hose including the exposed Map or Mas sensor. I use a product that will not harm sensors. VG results. Some cases have to clear a code following procedure. But results generally immediate.