Join Now
International Automotive Technicians Network

P0401 Diagnostic Trouble Code Discussion for May 2009

Insufficient EGR Flow Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0401
Help Request Posted
1998 Ford Taurus SE 3.0L MIL Lamp on, high idle VIN: 1FAFP52U9W
P0401: insufficient exhaust gas recirculation flow detected. vehicle increases in rpm almost to rev max after driving. once in park the idle increases dramatically and remains till you shut down the motor. customer states its constant but of course now its in my hands so its intermittent! any ideas?
May 06, 2009
2003 Ford F-250 Super Duty XL 6.0L low power VIN: SORRYNOVI3
P0401: Insufficient EGR Flow Detected. ... came in with no power and codes p006a and p0401, first thing i did was check e.g.r runners and they were full of carbon a did a BG carbon cleaning service and chenge the e.g.r, map was stuck at 1.68v with no change so i ...
May 11, 2009
2001 Ford Taurus SE 2-Valve 3.0L MIL Lamp on VIN: 1FAFP55U21
P0401: insu egr flow. I installed clamp around elbow to get more vacume to egr, and on start of testing can hear engine like idle hunting, and scan shows idle up and down. Long term trim in -4 and -5 bank 1 and 2, and stays around there. On test drive good power and I cleared code ...
May 14, 2009
1998 Ford Taurus SE 3.0L MIL Lamp on, high idle VIN: 1FAFP52U9W
P0401: insufficient exhaust gas recirculation flow detected. vehicle increases in rpm almost to rev max after driving. once in park the idle increases dramatically and remains till you shut down the motor. customer states its constant but of course now its in my hands so its intermittent! any ideas?
May 06, 2009
2003 Ford F-250 Super Duty XL 6.0L low power VIN: SORRYNOVI3
P0401: Insufficient EGR Flow Detected. ... came in with no power and codes p006a and p0401, first thing i did was check e.g.r runners and they were full of carbon a did a BG carbon cleaning service and chenge the e.g.r, map was stuck at 1.68v with no change so i ...
May 11, 2009
2001 Ford Taurus SE 2-Valve 3.0L MIL Lamp on VIN: 1FAFP55U21
P0401: insu egr flow. I installed clamp around elbow to get more vacume to egr, and on start of testing can hear engine like idle hunting, and scan shows idle up and down. Long term trim in -4 and -5 bank 1 and 2, and stays around there. On test drive good power and I cleared code ...
May 14, 2009