My 2000 L wagon started off with a p0420 code. Then started studdering from a stop to acceleration and when driving slow. Check engine started flashing. Swapped the plugs one was oily. and I am getting these code.
And when the ignition is on, not started the fans are turning on and off. Any ideas or input? I'm wicked stressed with this and having a hard time finding anyone who has a clue. My BF drove my car around and it all started after that. I'm sure he beat on it harder than I.
Thanks in advance!