Keith Browning Posted October 14, 2005 Share Posted October 14, 2005 2005 Excursion/2005-2006 F-Super Duty 6.0L - "P0402 caused by aftermarket equipment" Some 2005 and 2006 6.0l diesel equipped vehicles may set dtc P0402 (egr flow excessive detected). before proceeding with normal diagnostics, inspect the vehicle for non-approved aftermarket air induction systems, larger exhaust systems eliminating the catalytic converter, and/or performance enhancing chips/programmers which often change the dynamics in the air management system. The use of non approved aftermarket air induction systems can also contaminate the hot wire on the MAF, and cause inaccurate EGR diagnostics and function. Replacement of factory components will not resolve these concerns, and should not be attempted or covered under warranty... No kidding?! What about 2003 and 2004 models? We haven't seen this before have we fellas? /forums/images/%%GRAEMLIN_URL%%/rofl.gif Quote Link to comment Share on other sites More sharing options...
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