Hi Mercedes techs thanks for your help in advance. this is 95 C280 with gross polluter limits. fails at 15 mph with 1756ppm NOx and (GP)gross polluter at 25 mph 2363PPM NOx. we clean up the EGR system due to found system clogged replace front and rear HO2S, re...

FIX posted 10/4/2012

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