Hi. I have changed out my spark plugs on my 2000 Lexus es300. Now I'm getting codes P1351 and P1354. What would cause these codes? Thanks.

Comments (2)
No. 1-2
Juan242015
Juan242015

Engine is idling a little rough still. It does have vvt. Thank you for the advice. I will check those after I get off work. Also idk if this means anything but if I let it warm up for about 15 minutes before driving it runs great. But if I don't it runs rough.

Techsus
Techsus

Has your mpg <<< ? Engine idling rough or slow to accelerate? Is your Lexus fitted w/ VVT such that you have OCVs (Oil Control Valves)? Start there. Pull both from head of engine. Clean until they "snap." Clean out ports they insert into also & all mating surfaces. Re-install, see if you can clear those Codes then. Let us know if this helped.