Trouble code P0400 means:Exhaust gas recirculation-flow malfunction
Trouble code P0400 means: EGR System Performance
P0400 Exhaust Gas Recirculation Flow Malfunction LIBERTY DOES NOT HAVE AN EGR SYSTEM. P0400 DOES NOT APPLY TO LIBERTY
This tech tip pretty much says it all: http://www.asashop.org/autoinc/sept2002/techtips.cfm
Trouble code P0400 means: EGR System Performance
Trouble code P0400 means:Exhaust gas recirculation flow malfunction
Trouble code P0400 means:Exhaust gas recirculation flow malfunction
Trouble code P0400 means: Exhaust Gas Recirculation Flow
Trouble code P0400 means:Exhaust gas recirculation flow malfunction
Trouble code P0400 means:Exhaust gas recirculation flow malfunction
Trouble code P0400 means:Exhaust gas recirculation flow malfunction
Trouble code P0400 means:Exhaust gas recirculation flow malfunction
well on my 2000 Chevy tracker it is an egr flow malfunction. Girl at autozone said it could be a egr blockage.... Mike