emran Posted November 14, 2011 Report Share Posted November 14, 2011 code 340 came up on my ES300. what dose this code mean. Link to comment Share on other sites More sharing options...
pasto Posted December 11, 2011 Report Share Posted December 11, 2011 ask the one who gave you the code. Link to comment Share on other sites More sharing options...
kjz Posted February 27, 2012 Report Share Posted February 27, 2012 You will have to get one of those OBD 2 scanners and it will tell you what the code means. Just pick one up for cheap, and run it. Link to comment Share on other sites More sharing options...
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