Hi,

from a long time my lexus long fuel trims are terrible both bank (-20) and consuming too much fuel and I couldn’t find the leak.

now I got this code P0441 Evap system - after following threads, the most common solution was the gas cap initially and that was okay at my end but still I replaced it with a newer one, but that doesn’t solve the problem. Got the code again and the trims are still terrible even after resetting.

can someone help pls? If I need to replace a part pls let me know the part number and also the location of that part.

Also, the my sensors test doesnt pass the “Evaporative System” test. It says “Not Passed” and my absolute evap vapor pressure is around 100 KPA. Screenshot attached

Thanks in advance

 

Can someone pls help?
@MikeFig82

 

I think we covered most of the basics on this. Vac leaks, faulty purge valve, etc. ..

There was one instance where an identical problem. The thread just dead ended with similar pegged out rich LTFTs.

While the car is running if you disconnect the purge line at the valve. Place your finger on the port. Can you feel suction? It should be intermittent. On and Off it's not meant to stay open. The hose to be pulled off is the one right under the intake hose. That would be the inlet on the purge valve.

Post these pictures all over if you can.

Fuel Trims
O2 readings
​​​​​​Barometric Readings what part of the USA are you in.
MAF readings

If your scan tool can show freeze frame DTC's that as well.