2000 Lexus CEL & Trac Light On

[phxnative]

Hi. The check engine light and the Trak light came on and the car runs rough with RPM's high. Took to AutoZone for code scan; results= 0440 which I was told is cylinder 5 misfire. I replaced the spark plugs, but the problem still exists. Can you advise? Thanks,

[NYLexSC]

Check your O2 sensors, they may be busted and could throw that code. Trac light comes on whenever the Check Engine light comes on, so that will go away when you clear the CEL.

[kathienpb]

Hi there, I know these are old strings but we're having the same exact problem with our 2000 Lexus Es 300. The trac ctrl/check engine lite came on, the codes said noc sensors so we replaced those, then 02 sensors so we replaced those, then one of the 02 sensors again so we figured it was bad and replaced that last night as well. Didn't work, the lites came on again this morning. Is there anything else to try and get rid of the check engine lite? And the overdrive isn't working either. Please please help, we've tried everything, run scanner on transmission and nothing comes up there either. Can you please help me?

Thanks
Kathie

[monstermechanic]

I have a car in my shop with the same problem, i cleaned the boots on the bottom of the coils, installed new plugs , and cleared the codes. car runs great
cleaned the boots with dish soap and a bottle brush.