wadamt16 Posted June 27, 2010 Report Share Posted June 27, 2010 I got error code - P048 (Current) - Exhaust Gas Recirculation system Problem. It doesn't happen often, 1 or 2 times a month. What it may cause this? Link to comment Share on other sites More sharing options...
BodybyFisher Posted June 27, 2010 Report Share Posted June 27, 2010 I got error code - P048 (Current) - Exhaust Gas Recirculation system Problem. It doesn't happen often, 1 or 2 times a month. What it may cause this? Clean your EGR valve and the tubes that look back up at you when you look into the throttle body. use a hanger to 'rod out' those two tubes as deep as you can go. I used carb cleaner and compressed air to clean them. Use a new EGR valve gasket. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
wadamt16 Posted June 28, 2010 Author Report Share Posted June 28, 2010 I looked in the throttle body, both tubes look so bad. It is kinda hard for me to clear the tubes here r pics I will finish it and I hope it will be much better after. Thanks! Link to comment Share on other sites More sharing options...
BodybyFisher Posted June 28, 2010 Report Share Posted June 28, 2010 That is undoubtedly your problem.. Open up a HANGER, and stick the curly end into those tubes to 'rod them out', they end up at the EGR if I recall. Mine never looked that bad Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
wadamt16 Posted June 30, 2010 Author Report Share Posted June 30, 2010 I cleaned EGR valve like you said, with carb cleaner and compressed air, hoses, and etc, it helps. service engine soon light off, thanks! If E048 is shows again, will have to buy a new EGR valve, right? Link to comment Share on other sites More sharing options...
BodybyFisher Posted June 30, 2010 Report Share Posted June 30, 2010 Good for you.... looks like you did a good job. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
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