Check Engine Light With Engine Misfire Code (P0300-P0306)on Lexus IS250

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.

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Average mileage : 60,882 (9,558–134,000)
5 Years Affected: 2006, 2007, 2008, 2010, 2013
9 people reported this problem
4 people shared problem details
2013 Lexus IS25017,000
Intermittent cel, only code 0300' goes out on its own so far...
1 person likes thisFlag inappropiate
2010 Lexus IS2509,558
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
2007 Lexus IS250134,000
P0304 - changed spark plugs, did not solve problem. looking for further assistance...
2008 Lexus IS25033,500
check engine light is on code p0300 ,,p0304,p0305,p0306,dont know what to do,,,,, car runs fine