firstlexus Posted September 29, 2004 Share Posted September 29, 2004 How do I diagnose a Check engine light problem on a 98 ES300 it came one once before a month ago but went away after a couple of days this time it's been a week and it starting to annoy me. any suggestions. anyway I can troubleshoot this myself. Quote Link to comment Share on other sites More sharing options...
steviej Posted September 30, 2004 Share Posted September 30, 2004 drive to Autozone and have then pull the codes, it is a free serives. Post all the codes here. We can't help if we don't know what the code(s) is(are). steviej Quote Link to comment Share on other sites More sharing options...
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