The Check Engine Light may illuminate after a cold start with an engine misfire code stored (P0300 - P0306). This condition can be caused by faulty valve lash adjuster and/or valve spring. Our technicians tell us that revised parts are available to correct this concern.
Check Engine Light With Engine Misfire Code (P0300-P0306) on Lexus IS250
Average mileage: 68,868 (9,558–134,000)
12 people reported this problem
Viewing 1 - 5 of 5 comments
Vcs check in problem
Intermittent cel, only code 0300' goes out on its own so far...
recieved p0300 check engine light mulitple cyclinder misfires car was brought into dealer 4 months after 4 year warrenty was up dealer was aware of this problem hapenning set me up with loaner car my is250 was fixed with 9 year warrenty on pistions rings p0300 codes all at no--charge
P0304 - changed spark plugs, did not solve problem. looking for further assistance...
check engine light is on code p0300 ,,p0304,p0305,p0306,dont know what to do,,,,, car runs fine