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P0401 Diagnostic Trouble Code Discussion for March 2009

Insufficient EGR Flow Detected


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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
2000 Honda Odyssey LX 3.5L MIL Lamp on VIN: 2HKRL1858Y
P0401: EGR System Insufficient Flow Detected. the dealer is supposed to have a repair for this code 401 - has anyone ever done this modification ?? this was the only code in the system after we cleared it 2 times then on the 3rd we got a 325 and a 400 - van runs perfect
March 09, 2009
1998 Toyota Camry CE 2.2L MIL Lamp on VIN: JT2BG22K3W
P0401: EGR System Insufficient Flow Detected. EGR holds vacuum, vacuum source at egr valve is excellent, even under cruising conditions while mil triggers, back pressure transducer work excellent (even tried with a new one since I had one here), Both vacuum lines are clear coming from the intake and do ho...
March 10, 2009
1998 Toyota Camry CE 2.2L MIL Lamp on VIN: JT2BG22K3W
P0401: EGR System Insufficient Flow Detected. EGR holds vacuum, vacuum source at egr valve is excellent, even under cruising conditions while mil triggers, back pressure transducer work excellent (even tried with a new one since I had one here), Both vacuum lines are clear coming from the intake and do ho...
March 12, 2009
1996 Ford Explorer Eddie Bauer 4.0L Poor Idle Quality VIN: 1FMDU34X4T
P0401: Insufficient EGR Flow Detected. ... for codes and got this code P0401 , found that the electric vacum actuator not working and i had no vacum to the egr valve, replaced the vacum actuator and now i have vacum to the egr. when i start the car and engine is cold it seems that i have "2 cyl...
March 24, 2009
1995 Oldsmobile 98 Regency Elite 3.8L Cuts out, Stall VIN: 1G3CX52K4S
P0401: egr flow. ... came in stalling at times and ses light on,scanned had 4 codes checked p0342 first no cam magnet broken and egr valve inop replaced above parts then fun began.started up ran [...] then stalled started right up and ran rou...
March 24, 2009
1996 Ford Explorer Eddie Bauer 4.0L Poor Idle Quality VIN: 1FMDU34X4T
P0401: Insufficient EGR Flow Detected. ... for codes and got this code P0401 , found that the electric vacum actuator not working and i had no vacum to the egr valve, replaced the vacum actuator and now i have vacum to the egr. when i start the car and engine is cold it seems that i have "2 cyl...
March 25, 2009
1998 Ford E-150 Econoline 4.2L Excessive Emissions, Misfire, Poor Fuel Economy, pings badly VIN: 1FTRE1423W
P0401: erg insufficient flow. Engine Pinging horribly on accell and cruise. Snap on modis with lates update 8.6 shows all data normal o2's varying, dpfe 1.02 volts, maf normal, fuel trims normal after doing intake and cleaning all egr ports. Engine seems to have plenty of power (dropped fr...
March 25, 2009
2000 Honda Odyssey LX 3.5L MIL Lamp on VIN: 2HKRL1858Y
P0401: EGR System Insufficient Flow Detected. the dealer is supposed to have a repair for this code 401 - has anyone ever done this modification ?? this was the only code in the system after we cleared it 2 times then on the 3rd we got a 325 and a 400 - van runs perfect
March 09, 2009
1998 Toyota Camry CE 2.2L MIL Lamp on VIN: JT2BG22K3W
P0401: EGR System Insufficient Flow Detected. EGR holds vacuum, vacuum source at egr valve is excellent, even under cruising conditions while mil triggers, back pressure transducer work excellent (even tried with a new one since I had one here), Both vacuum lines are clear coming from the intake and do ho...
March 10, 2009
1998 Toyota Camry CE 2.2L MIL Lamp on VIN: JT2BG22K3W
P0401: EGR System Insufficient Flow Detected. EGR holds vacuum, vacuum source at egr valve is excellent, even under cruising conditions while mil triggers, back pressure transducer work excellent (even tried with a new one since I had one here), Both vacuum lines are clear coming from the intake and do ho...
March 12, 2009
1996 Ford Explorer Eddie Bauer 4.0L Poor Idle Quality VIN: 1FMDU34X4T
P0401: Insufficient EGR Flow Detected. ... for codes and got this code P0401 , found that the electric vacum actuator not working and i had no vacum to the egr valve, replaced the vacum actuator and now i have vacum to the egr. when i start the car and engine is cold it seems that i have "2 cyl...
March 24, 2009
1995 Oldsmobile 98 Regency Elite 3.8L Cuts out, Stall VIN: 1G3CX52K4S
P0401: egr flow. ... came in stalling at times and ses light on,scanned had 4 codes checked p0342 first no cam magnet broken and egr valve inop replaced above parts then fun began.started up ran [...] then stalled started right up and ran rou...
March 24, 2009
1996 Ford Explorer Eddie Bauer 4.0L Poor Idle Quality VIN: 1FMDU34X4T
P0401: Insufficient EGR Flow Detected. ... for codes and got this code P0401 , found that the electric vacum actuator not working and i had no vacum to the egr valve, replaced the vacum actuator and now i have vacum to the egr. when i start the car and engine is cold it seems that i have "2 cyl...
March 25, 2009
1998 Ford E-150 Econoline 4.2L Excessive Emissions, Misfire, Poor Fuel Economy, pings badly VIN: 1FTRE1423W
P0401: erg insufficient flow. Engine Pinging horribly on accell and cruise. Snap on modis with lates update 8.6 shows all data normal o2's varying, dpfe 1.02 volts, maf normal, fuel trims normal after doing intake and cleaning all egr ports. Engine seems to have plenty of power (dropped fr...
March 25, 2009