codes...what are they? [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: codes...what are they?


joe496chevy
02-20-2005, 11:11 PM
I have a couple codes keep coming back after I clear them.
DTC codes 0299 is a low boost code..... but what are 0401,0403??

BzGmTech
02-20-2005, 11:38 PM
<!--StartFragment --> DTC P0401= Exhaust Gas Recirculation (EGR) Flow Insufficient
<!--StartFragment --> DTC P0403= Exhaust Gas Recirculation (EGR) Solenoid Control Circuit
:beerchug: