I have a 2000 E430 4-matic. Today the "Check engine" light came on during a short trip to town. I checked the OBD 11 port and got the codes P0170 & P0173 which my generic codes says are Fuel Trim bank 1 & Fuel Trim bank 2....what is the M/B description for these codes.....prior to the trip today the car has been in the garage and I thought I smelled gasoline.....after the trip I smelled 'rotten eggs" (sulfur) ....I checked the gas tank cap it appeared to be tight and gasket ok...any help would be appreciated...BTW I did check the archives and got no real help there...

Thanks...