I know this is a o2 sensor problem with the 1st sensor on bank 1 but where is it and can a home mechanic fix this. It's on a fwd 01 T&C ltd. with the 3.8. I tried to look underneth by the cat but didn't see it. Thanks

 

thats because its not underneath the vehicle. its by the fire wall and you could probably change it yourself. just things to caution you on. it could be also caused by an exhaust leak bad fuel mixture or bad wiring.