Join Now
International Automotive Technicians Network

P0401 Diagnostic Trouble Code Discussion for April 2011

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
1997 Ford Ranger XL 4.0L MIL Lamp on VIN: 1FTCR14X1V
P0401: insuficiant egr flow. There has to be something we are missing. We replace these things all the time but this ranger keeps eating them. Is there anyone out there that has ranj across a repeated failure with a dpfe? Please help!
April 05, 2011
2003 Ford F-250 Super Duty XLT 6.0L no / low power VIN: 1FTNW21P03
P0401: Insufficient EGR Flow Detected. ... for couple miles power gets better codes p132b and p0401 will set when pulling loaded trailer removed cat converter still has same problem disconnected batteries and performed turbo relearn smoked checked ehaust and all inter cooler hoses has latest calibr...
April 06, 2011
2004 Pontiac Bonneville SLE 3.8L MIL Lamp on VIN: 1G2HZ54143
P0401: Insufficient EGR Flow Detected. Sets p0401 EGR flow on a drive cycle. enging is supercharged and tried a good EGR valve, MAP sensor and tried latest programing. Flow is good thru valve and can be controlled correctly by Tech 2. Positions look correct also. Strange
April 12, 2011
2003 Ford F-250 Super Duty Lariat 6.0L No Start, Cuts out, Misfire VIN: 1FTNW21P63
P0401: Insufficient EGR Flow Detected. came in complaint of no power up hill, took on drive up local grade 45 mph tops, came back to shop had multiple codes as i have listed, shut vehicle off to check a couple of things then it would not start, the oil pressure gauge in dash was not coming up while...
April 13, 2011
2003 Ford F-250 Super Duty Lariat 6.0L No Start, Cuts out, Misfire VIN: 1FTNW21P63
P0401: Insufficient EGR Flow Detected. came in complaint of no power up hill, took on drive up local grade 45 mph tops, came back to shop had multiple codes as i have listed, shut vehicle off to check a couple of things then it would not start, the oil pressure gauge in dash was not coming up while...
April 14, 2011
1996 Toyota Tercel DX 1.5L MIL Lamp on VIN: JT2AC52L2T
P0401: EGR System Insufficient Flow Detected. This Tercel keeps setting a P0401--EGR Insufficient Flow. We have replaced the EGR solenoid and the four-way vacuum transducer that is in-line with the EGR valve vacuum hoses. The EGR valve holds vacuum all day and the engine RPM's stumble when it is manually ...
April 25, 2011
2001 Ford F-150 XL 4.6L MIL Lamp on VIN: 1FTRX17W71
P0401: egr flow insufficient. egr system will check itself and complete the test then in about 4 miles will reset mil with PO401.
April 26, 2011
1997 Ford Ranger XL 4.0L MIL Lamp on VIN: 1FTCR14X1V
P0401: insuficiant egr flow. There has to be something we are missing. We replace these things all the time but this ranger keeps eating them. Is there anyone out there that has ranj across a repeated failure with a dpfe? Please help!
April 05, 2011
2003 Ford F-250 Super Duty XLT 6.0L no / low power VIN: 1FTNW21P03
P0401: Insufficient EGR Flow Detected. ... for couple miles power gets better codes p132b and p0401 will set when pulling loaded trailer removed cat converter still has same problem disconnected batteries and performed turbo relearn smoked checked ehaust and all inter cooler hoses has latest calibr...
April 06, 2011
2004 Pontiac Bonneville SLE 3.8L MIL Lamp on VIN: 1G2HZ54143
P0401: Insufficient EGR Flow Detected. Sets p0401 EGR flow on a drive cycle. enging is supercharged and tried a good EGR valve, MAP sensor and tried latest programing. Flow is good thru valve and can be controlled correctly by Tech 2. Positions look correct also. Strange
April 12, 2011
2003 Ford F-250 Super Duty Lariat 6.0L No Start, Cuts out, Misfire VIN: 1FTNW21P63
P0401: Insufficient EGR Flow Detected. came in complaint of no power up hill, took on drive up local grade 45 mph tops, came back to shop had multiple codes as i have listed, shut vehicle off to check a couple of things then it would not start, the oil pressure gauge in dash was not coming up while...
April 13, 2011
2003 Ford F-250 Super Duty Lariat 6.0L No Start, Cuts out, Misfire VIN: 1FTNW21P63
P0401: Insufficient EGR Flow Detected. came in complaint of no power up hill, took on drive up local grade 45 mph tops, came back to shop had multiple codes as i have listed, shut vehicle off to check a couple of things then it would not start, the oil pressure gauge in dash was not coming up while...
April 14, 2011
1996 Toyota Tercel DX 1.5L MIL Lamp on VIN: JT2AC52L2T
P0401: EGR System Insufficient Flow Detected. This Tercel keeps setting a P0401--EGR Insufficient Flow. We have replaced the EGR solenoid and the four-way vacuum transducer that is in-line with the EGR valve vacuum hoses. The EGR valve holds vacuum all day and the engine RPM's stumble when it is manually ...
April 25, 2011
2001 Ford F-150 XL 4.6L MIL Lamp on VIN: 1FTRX17W71
P0401: egr flow insufficient. egr system will check itself and complete the test then in about 4 miles will reset mil with PO401.
April 26, 2011