Hello again sir! What is the details on the vehicle, Year, make, model and engine?
1997 Lexus ES300
Great, be right back...
Ok, I just wanted to confirm. The code is for an Evaporative Emission leak. The most likely cause is the canister vent valve located on the canister under the car. You will most likely be forced to replace the entire canister and that will come with the valve. The vent valve usually gets bound up by debris from the elements and it doesn't seal, showing an evap leak in the process.
is this affecting performance? Car has been a bit sluggish, not bad, just a little
No, it shouldn't affect performance at all, just emission control
How many miles is on it?
That is some good driving. If the mass air flow sensor is dirty, it could edge off performance and not set a error code. See if you can clean it with some electrical contact cleaner. Look at the resistors on the sensor, they get insulated with dirt.
Ok. I'll try that on the mas. For the 446 code, I wonder if that is an inspection fail. We have emissions testing here
If it is like it is here in NJ, when they plug their machine into the OBDII connector, their machine will look to see if the engine light is commanded on, if it is, it will look and pull the codes and cause it to fail. Pick up a charcoal canister with the VSV valve (canister vent valve) from toyota and install it yourself. You can clear the code after or drive the car for a couple of weeks and the light should turn off on its own
do you have an illustration of where it is located?
Yes, I'll grab it now
Ok, not so easy to find a picture of its location, but here is what the canister looks like. It is usually mounted behind the gas tank above the rear suspension.
Parts store guys keep saying we need to have a shop run tests to find leak? Also finding two parts places not carrying that part? Age of car maybe?
You will have to get it from Toyota. Here is the part number and the list price,
Plug that part number into Google and you should be able to find it wholesale somewhere