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 problem details
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