Dazed and Confused
Join Date: May 2012
Location: Upstate New York
Re: 2005 Ford Crown Victoria won't pass emissions
The first one says that you're not getting enough fuel, and the second one is saying that your O2 sensor on the drivers side exhaust downstream of the catalytic converter thinks your cat's not functioning anymore. Since you don't have a lean code (also caused by insufficient fuel), you probably need a fuel filter, checking fuel pressure with the proper tool (cost about 50 bucks) will confirm pressure or bad sensor.
The O2 sensor will require a multimeter and electrical testing.
Ever notice that there's so many high performance parts available for GM products?
Did you ever think that maybe they NEED them?