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Hi!


I have the same P0401 Insufficient flow detected error code, that is coming back in the last 5 months. I have changed and get new O2 upper and downer sensor, new EGR valve. No visible sign of any fault.


2008 Civic 1.8 SE Hatchback UK - 140 Bhp



I attached a few OBD scanner result pictures. Any idea?
 

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