"Decreased Engine Performance" message?
Car is a 2006 V50, T5 AWD, coming up on 90,000 miles, regularly serviced and maintained.
About every 5,000 miles, for the last 25,000 or so, I get the "Decreased Engine Performance" message. It's a decrease in performance that really isn't noticeable during ordinary cruise or casual acceleration but is definitely noticeable under hard acceleration.
When I get it, I dump a pint of Techron or Ventil Sauber into a tank of gas and it seems to go away for another 5,000 miles.
Is there a more permanent fix for this condition? Some people have said removing and cleaning the MAF sensor will do it.