OldGlory Posted November 15, 2010 Share Posted November 15, 2010 I have just gotten a scan code P1663 OCV Circuit Bank 2 on my 1999 ES300 with 170k. The CEL and has been going off and on and now is stating on. Can anyone help me with this code and how to replace this circuit if this is the under lying problem. I also got a a trouble code PO441 evaporative Emission System Incorrect purge Flow. Quote Link to comment Share on other sites More sharing options...
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