Join Date: Jan 2013
Location: New England - Connecticut
Car: '03 L L Bean - LOVE IT!!
Feedback Score: 0 reviews
Well, our '03 subie that we've had for 2 weeks or so and put on about 300 miles had the CEL come on last nite.
Yep, I flipped out. Got it read today and it IS the P0420 that you talk about here.
What should we do first? We've put in 2 full tanks of premium gas, the second one today, because it was running really rough when we got it--probably indicative of crappy gas. It's running better, but not perfect. Also threw in some fuel injector cleaner--recommended by the place we had it read at.
Now where do we go from here? Do we do the PCV valve? I've read a lot of threads, but no one says what to do in what order.....