Sorry.. I'm sure this is covered somewhere, but the system won't let you search 'ecm'.. not enough letters...
Our 04 Outback, 2.5L, auto, AWD, wagon, 140k ish. Started missing last week.. became worse and worse. Had trouble pulling hills... helped to shift into 3rd or 2nd to spike the rpms.... Became to bad to continue and I parked the car.
Now.. it cranks, back fires sometimes out the back, sometimes up thru the throttle body. This afternoon I could not get it to start at all....
AND... the biggest clue I guess... my scan tool would not come on when plugged into the obd port. Just a blank screen at first. Then after bit it flickered on, then off. Once it stayed on long enough to read the codes, but it only showed p0032, which it's shown for years, even after I replaced the 02 sensor.
So where do I start here... is the ECM plug and play for a swap in my car... it's an 03. Any likely culprits for something shorting out the ECM? I saw another post similar which turned out to be a corroded air pump sensor?