I know this topic has been touched on before, but I didn't receive much help from it. I have a 2011 Lexus IS350. I recently installed an Fsport intake on my car. Once installed took the car out for a drive and drove perfect no issues whatsoever, next day went to costco filled up gas and then 5-10 mins into leaving the gas pump, car throws a CEL for P0441. Took a look into it and was told to replace the gas cap, so i got a new one from the dealership, cleared the codes and then came back on after 15-20 miles. So now I'm not sure what to check for or look into. I don't know if it has anything to do with me replacing the intake wrong or something, or maybe because i might have topped off the gas tank just a little bit. Car runs perfectly normal so far

any help would be greatly appreciated

 

The intake has a hose that runs under it. You probably had to unclip it to remove the OEM pipe?

If not you pulled hard on it, and it's disconnected from the hard line on the body. Check purge valve as connector as well.

 

Yeah I saw the hose there, I just went and looked in my car and yes that hose was disconnected, I just put it back on and lets hope that clears it, but when i went to clear the engine code it showed me a new code P0445.

 

Rest the ecu, or let it reset if it's fixed by driving a few miles. The 45 code is gross leak detected in the evap system. The 41 is incorrect purge flow I think. Did the code say permanent as description? If so it won't go away until ECU is satisfied.

I'd reset the code by pulling the fuse method at this time. So you don't lose wndow settings radio. . . Etc.

ECU Reset