DTC Code [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: DTC Code


dmaxn04
02-14-2009, 08:32 PM
I been getting this code quite often now.. What is wrong?

DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient

dmaxn04
02-15-2009, 02:56 PM
anyone?

13Fox
02-15-2009, 03:29 PM
I would suspect a bad EGR valve, unless you have recently installed a blocker plate. Fill in you signature, it will let people know what you drive and make it easier to help.

dmaxn04
02-15-2009, 10:39 PM
Its on my buddies 06 LBZ. He only has ppe, intake and exhaust and is tripping that code.