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P0401 Diagnostic Trouble Code Discussion for August 2010

Insufficient EGR Flow Detected


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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
2001 Honda Accord LX 3.0L MIL Lamp on VIN: 1HGCG16521
P0401: EGR System Insufficient Flow Detected. ... intermittently. Scanned for codes and retrieved P0401 (EGR flow restricted). Tested EGR operation by applying power and ground on pins #4 & #6, respectively and no response from the idling engine. So, it's almost an indication of carbon build-up in the...
August 05, 2010
1998 Mercury Sable GS 3.0L MIL Lamp on VIN: 1MEFM53SXW
P0401: Insufficient egr flow. ... sable that has me stumped.complaint is cel on p0401 only code set.first time in found dpfe sensor stuck @ 3.73 volts replaced sensor customer took car called next morning light back on.second time in went thru entire egr system.unable to find any vacuum or...
August 05, 2010
2004 Kia Optima LX 2.4L Poor Idle Quality, MIL Lamp on VIN: KNAGD12624
P0401: Insufficient EGR System Flow Detected. only info i could find on system was that it had obout 6in of bypass vacumn at all times found egr valve to be opening at idle ck vacumn at valve it has 6 in. I thought that spring weak got new valve from dealer just hooked vacumn up did not install still open...
August 06, 2010
2002 Ford F-150 Harley-Davidson Edition 5.4L Cuts out, Stall VIN: 1FTRW07302
P0401: Egr insufficient flow detceted. after the pcm was replaced under warranty vehicle was good for about two weeks then customer had same situation car would start and stall while driving and then finally theft light came on and no more start( crank no start) went back to dealer had pcm replaced...
August 16, 2010
1998 Toyota Camry LE 2.2L MIL Lamp on VIN: 4T1BG22K4W
P0401: EGR System Insufficient Flow Detected. ... camry 2.2l code p0401 insufficient egr flow. I have removed egr. Ports are clean intake and exhaust. I jumped te connector and installed vacuum guage on egr hose raised idle and egr gets 5in of vacuum. When driving car computer is commanding on egr valve i...
August 25, 2010
2004 Ford F-350 Super Duty XLT 6.0L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1FTSX31P24
P0401: Insufficient EGR Flow Detected. As stated, this is one of those lovely Ford 6.0 diesels, anyone who enjoys working on these, please help me?!!! We have done the heads, as stated because of the exhaust gases being found in the coolant, once valve covers were off, we found about a 1/2 inch thi...
August 26, 2010
1999 Chrysler Sebring LXi 2.5L Poor Idle Quality, Misfire VIN: 4C3AU52NXX
P0401: EGR System Malfunction. Hello from TN, We have a Sebring here with the 2.5 v6 that keeps eating egr valves. Every time it comes in the little disc inside the egr valve is missing. Has anyone had multiple failures like this before? Vehicle runs excellent, well maintained. no other cod...
August 27, 2010
1999 Chrysler Sebring LXi 2.5L Poor Idle Quality, Misfire VIN: 4C3AU52NXX
P0401: EGR System Malfunction. Hello from TN, We have a Sebring here with the 2.5 v6 that keeps eating egr valves. Every time it comes in the little disc inside the egr valve is missing. Has anyone had multiple failures like this before? Vehicle runs excellent, well maintained. no other cod...
August 28, 2010
2001 Honda Accord LX 3.0L MIL Lamp on VIN: 1HGCG16521
P0401: EGR System Insufficient Flow Detected. ... intermittently. Scanned for codes and retrieved P0401 (EGR flow restricted). Tested EGR operation by applying power and ground on pins #4 & #6, respectively and no response from the idling engine. So, it's almost an indication of carbon build-up in the...
August 05, 2010
1998 Mercury Sable GS 3.0L MIL Lamp on VIN: 1MEFM53SXW
P0401: Insufficient egr flow. ... sable that has me stumped.complaint is cel on p0401 only code set.first time in found dpfe sensor stuck @ 3.73 volts replaced sensor customer took car called next morning light back on.second time in went thru entire egr system.unable to find any vacuum or...
August 05, 2010
2004 Kia Optima LX 2.4L Poor Idle Quality, MIL Lamp on VIN: KNAGD12624
P0401: Insufficient EGR System Flow Detected. only info i could find on system was that it had obout 6in of bypass vacumn at all times found egr valve to be opening at idle ck vacumn at valve it has 6 in. I thought that spring weak got new valve from dealer just hooked vacumn up did not install still open...
August 06, 2010
2002 Ford F-150 Harley-Davidson Edition 5.4L Cuts out, Stall VIN: 1FTRW07302
P0401: Egr insufficient flow detceted. after the pcm was replaced under warranty vehicle was good for about two weeks then customer had same situation car would start and stall while driving and then finally theft light came on and no more start( crank no start) went back to dealer had pcm replaced...
August 16, 2010
1998 Toyota Camry LE 2.2L MIL Lamp on VIN: 4T1BG22K4W
P0401: EGR System Insufficient Flow Detected. ... camry 2.2l code p0401 insufficient egr flow. I have removed egr. Ports are clean intake and exhaust. I jumped te connector and installed vacuum guage on egr hose raised idle and egr gets 5in of vacuum. When driving car computer is commanding on egr valve i...
August 25, 2010
2004 Ford F-350 Super Duty XLT 6.0L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1FTSX31P24
P0401: Insufficient EGR Flow Detected. As stated, this is one of those lovely Ford 6.0 diesels, anyone who enjoys working on these, please help me?!!! We have done the heads, as stated because of the exhaust gases being found in the coolant, once valve covers were off, we found about a 1/2 inch thi...
August 26, 2010
1999 Chrysler Sebring LXi 2.5L Poor Idle Quality, Misfire VIN: 4C3AU52NXX
P0401: EGR System Malfunction. Hello from TN, We have a Sebring here with the 2.5 v6 that keeps eating egr valves. Every time it comes in the little disc inside the egr valve is missing. Has anyone had multiple failures like this before? Vehicle runs excellent, well maintained. no other cod...
August 27, 2010
1999 Chrysler Sebring LXi 2.5L Poor Idle Quality, Misfire VIN: 4C3AU52NXX
P0401: EGR System Malfunction. Hello from TN, We have a Sebring here with the 2.5 v6 that keeps eating egr valves. Every time it comes in the little disc inside the egr valve is missing. Has anyone had multiple failures like this before? Vehicle runs excellent, well maintained. no other cod...
August 28, 2010