hey guys i drive a 2002 b6 a4 1.8T, CEL came on because of a bad o2 sensor and a cat code. basically i had an oil leak on the intake side of the turbo and it sucked oil through everything destroying my cat. so i replaced the front o2 sensor and tried tricking the computer by spacing the rear o2 sensor. all CEL's went away for a few drive cycles now i have a code p0139 and p0130....something about a post cat correction issue? im at work right now i have more info in my car on the codes if you need them...just wondering if this car is too smart to trick... also sometimes when i put on my RIGHT blinker it will blink the left one once or twice before going back to the right side. or sometimes it just blinks all left then shuts off....any ideas?

 

Correction: sorry guys those codes (p0139 & p0130) were the codes it threw before. We tried to correct it by spacing the post cat o2 sensor and putting a brand new one in pre cat. The current code is- "p1176- bank 1 : 02S (Lambda) correction behind catalyst: control limit reached" and "sporadic 001: upper limit exceeded"