1998 Ford Expedition "code p0401" Questions

...code P0401 98 Ford expedition OBD-II Trouble Code P0401 - Insufficient EGR Flow EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion ...

Multiple vacuum problems. Now receiving P0401 and P0308 codes. 1998 Ford Expedition 5.4 Triton. I have replaced numerous vacuum lines, such as the PCV line, and others due to holes or tears. Now the ...

...p0401-- Restriction in the EGR passages, usually caused by carbon buildupThe EGR Valve is defectiveLack of proper vacuum or electrical signal to the EGR valveMalfunctioning EGR Vacuum supply ...

...code P0401 is what shows cleared code not returned yet Technical Description Insufficient EGR Flow What does that mean? EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions ...

...code P0401, you have insufficient flow through the valve. In expeditions, It is usually a blockage at the intake. I am including a link to a video that I think will help you out. How to Fix Ford F150 ...

replaced dpfe and egr valve same code p0401 4.6l engine Hi have you done a DPF regeneration with the diagnostic scan tool. ??

...code P0401 indicates that the "EGR insufficient flow Detected". I have replace the EGR value,DPFE and the EVR. I reset the error and it runs for 12 miles or so before the light returns? try to clean ...

P0401 code won't go away replaced egr valve, egr pressure sensor & egr vacuum solenoid all on recommendation from staff at autozone. Cleared the code each time but after about 20 miles, sometimes less

...p0401. replace egr valve also the egr valve sensor and the egr vacuum solenold.and i sill got the problem with the engine light on.can anybody give me some idea. Can you give me a code number. Also ...

...engine. Check Engine light is on. Have replaced EGR valve & Diff Presure Sensor. Still getting codes: P0401 & P1000 The check engine light came back on after I reset it and drove it for a ...