LEX man44

1999 ES300. Have replaced all three O2 sensors (Bosch). Now getting an occasional P0404 code along wih TRAC OFF, only at high speeds. Car has 114,000 miles on it ,absolutely no problems until now, but I expect these things to start happening.

I had the same issue with my 99 ES and went round and round taking it to 3 different alignment shops...... Lexus dealer ship was totally usless saying that it could be the frame misaligned and cost me $100 for nothing. I finally put new tires on and still pulled. Took it to Sears and the guy switched the the front tires, aligned it and it and got me straighted out. So in my case it turned out to be the tires. But the guy at Sears was willing to work with me whatever it took to alieveate the problem so find someone that feels your pain. To be honest I was ready to trade the car in because of this. It was a drag to have to pull on the steering wheel the oppisite direction the entire trip whenever I got on the road.