How to Perform a P0404 EGR cleaning on a Saturn S-series

P0404 – Meaning, Causes, Symptoms, & Fixes code p0404 The code may be thrown due to a clogged cat with too much back pressure anyone here ever encounter that or have any other thoughts? code 369 club Had my EGR valve replaced 4 weeks ago on MY15 CC D2 and since then had a check engine light in 3 occasions, fault code P0404 EGR Control Circuit Performance

code promo mycasino P0404 = Exhaust Gas Recirculation Circuit RangePerformance The fault code is probably showing because your EGR valve is blanked