i appreciate the response. I still wanna know what part of the fuel system fails component self testing and what is keeping it from throwing a cel. Although the car seems to run fine i believe its that system keeping it from completing im readieness. I never wanted a cel so desperatly before or ever...

My 06 s60r will not set o2 and catalyst monitors after hundreds of miles and dozens of drive cycles. Have no check engine light and no fault codes. O2 sensor heaters pass and long term fuel is +3% i been over entire vacuum system numerous times. Checked fuel pressure with external gauge in comparisi...