The model of the car is a 97 A4 2.8 v12 Quattro with 130,000 miles on it. it is also a 5 speed. A week ago I was driving home from the beach and ran out of gas due to my faulty fuel gauge that I still haven't fixed. after i got gas my CEL turned on. Went to Pep Boys and got them to scan it. I got the following three codes P1101, P1106, P1250. I did some searching and found that P1101 and P1106 are the two O2 sensors and P1250 indicated a low fuel level. I'm guessing that P1250 came on as the car was running out of gas but I don't know why the two O2 sensors are out of whack. the car runs fine but is lacking a little power and after it has run for a few minutes the idle will drop from 900-1000 to 700-600. Any info on how to fix this problem would be greatly appreciated

 

Probably the O2 censor codes are from running lean when you ran out of gas. I would clear them and just see if it comes back or not.

 

Yeh, either that or you got watered down gas from some dadi babu gas station

 

you need some seafoam, 93 octane, clear the codes, and drive lol. also, take the 02 sensors out and clean them with carb or intake cleaner and then run the car. you might get another codes for them if you don't let them dry enough but it should clean any carbon that's on them. i'm thinking the dirty gas fouled them out

 

Thanks a lot for all the help guys. I will try to drive off this tank of gas and do it all on the next fill up. I will post back the results in a few days. Tanks again for your help!

*Edit* One more thing. I will try to search this but if you guys know how. How do I go about clearing the codes? do i pull a fuse or do in need to go back to Pep Boys and get them to do it with the OBD II?

 

yeah, you clear the codes with the scanner at pep boys. or you can disconnect the battery for a few minutes.

 

Thanks a lot for all the help guys.