1998 Ford Expedition "p0401" Questions

Check engine light 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

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 ...

OBD Codes P0401; P0171; P0174. EGER valve sensor vacuum tube winds up upon starting; will not idle. What have others found to be the issue? EGR sensor has gotten very hot and plastic tube connectors ...

I'm getting an engine check light, the OBD-II is P0401. The error code P0401 indicates that the "EGR insufficient flow Detected". I have replace the EGR value,DPFE and the EVR. I reset the error and ...

...right of the carburetor. It is approximately 3 inches wide. If you are experiencing a trouble code P0401, you have insufficient flow through the valve. In expeditions, It is usually a blockage at

ford expedition,flujo insuficiente de p0401 EGR Valve

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

...changed plugs running well 1 day later service engine soon light appears. Took to parts house code P0401 is what shows cleared code not returned yet Technical Description Insufficient EGR Flow What ...

exhaust recircuulation flow insufficient detected-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

...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 while.