Hello, I just purchased this 2005 RX330 from a Dealership. Only 31k Miles on it. I hope I did not buy a lemmon. Drove the vehicle under 100 miles and CEL and VSC light came on. Car runs fine but I ran OBD test and got the following error codes
P0441 Evap Emission COntrol System Purge Flow Fault,
P0446 Evap Emission Control System Vent Circulation Malfunction
P0455 Control System Leak

I did check this board and did not see any problems with the gas cap, althought it did not hiss when I took it off, and Air flow hoses seem to be tight. Any suggestions ?

 

Welcome to the Club.

Keep in mind your vehicle is still under the 8 year/80K Federal Emissions Warranty and those things should come under that.

Generally those faults are related to one of the following: gas cap issue (not tight enough or bad), a hosing (leak usually) on the of the engine and extending to the back to the charcoal canister (black box underneath the rear of the vehicle).

 

Take it in, lexmex is right. Do not sweat it, it is under warranty.

 

After taking it into the dealership, they ran test on it. It turns out to be a bad gas cap rubber gasket, which they say caused the errors. They replaced the gas cap, and tested the Evap system, which then showed no leaks. I drove the vehicle 20 miles after testing and so far its OK Thanks all !!