rkim711 Posted July 3, 2010 Share Posted July 3, 2010 what is P0171 "system too lean"? and what can i do to fix it? thanks ppl Quote Link to comment Share on other sites More sharing options...
carguy07 Posted July 4, 2010 Share Posted July 4, 2010 what is P0171 "system too lean"? and what can i do to fix it? thanks ppl Clear it and see if it comes back. If it comes back try cleaning the MAF sensor. http://www.lexusownersclub.co.uk/knowledge/index.php?page=index_v2&id=152&c=11 Quote Link to comment Share on other sites More sharing options...
rkim711 Posted July 5, 2010 Author Share Posted July 5, 2010 thanks for the help Quote Link to comment Share on other sites More sharing options...
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