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Hi to you all, i am new to this site but have had 11 alfa's, i have a 2004 (04) 156 1.9JTD M-jet and i have had EGR codes coming on for the last 6 months, i did find on the site how to clean, so i did this now it has gone from PO401 to PO404 ( EGR flow CKT range/performance), can any one help as it is driving me mad, many thanks Colin.
 

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P0400 Exhaust Gas Recirculation Flow Malfunction
P0401 Exhaust Gas Recirculation Flow Insufficient Detected
P0402 Exhaust Gas Recirculation Flow Excessive Detected
P0403 Exhaust Gas Recirculation Circuit Malfunction
P0404 Exhaust Gas Recirculation Circuit Range/Performance
P0405 Exhaust Gas Recirculation Sensor A Circuit Low
P0406 Exhaust Gas Recirculation Sensor A Circuit High
P0407 Exhaust Gas Recirculation Sensor B Circuit Low
P0408 Exhaust Gas Recirculation Sensor B Circuit High

EGR ISSUE
 
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