My engine light came on. I have a code 441 and 450. Codes have three different trouble areas each. Have any one had these codes and what exactly was the problems. I changed out my vacuum pressure valve. Reset light and it came back on.

 

The P0450 code is extremely infrequent.

Toyota had an emissions problem that included this year and model. A settlement was reached with the EPA resulting in an extended warranty. Seen links below.

http://www.epa.gov/compliance/resour...aa/toyota.html

http://www.automotiveforums.com/t911...ode_p0450.html