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P0401 Diagnostic Trouble Code Discussion for March 2008

Insufficient EGR Flow Detected


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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
1999 Ford E-150 Econoline 4.2L MIL Lamp on, fails emissions
P0401: egr flow. ... found check engine lite not doing bulb check some one yanked bulb!!! Has p0401 in memory!!freeze frame 2300 rpm hot engine closed loop!Replaced pfe sensor pretty common vacum lines are routed correctley still setting code! Checked egr solenoid for vacum su...
March 04, 2008
1996 Honda Accord EX 2.2L MIL Lamp on VIN: 1HGCD5658T
P0401: EGR System Insufficient Flow Detected. Heys guys I believe my egr passage is clogged up. I can take a vacum pump and see my egr valve working and holding vacum. I removed my egr valve and again applied vacum and can see the valve is working. I started the car with the egr valve off and i am not get...
March 05, 2008
1998 Honda Accord LX 2.3L fuel smell VIN: 1HGCG5641W
P0401: EGR System Insufficient Flow Detected. need some honda techs ,keep getting code for leak in fuel tank sytem p1456 ,alldata states gas cap ,or two way valve ,change cap and o-rings for two way valve,code comes back in 20 miles and smell of fuel ,any other help for this would be appreciated ,also a n...
March 10, 2008
1998 Ford Taurus SE Comfort 3.0L Poor Fuel Economy VIN: 1FAFP53S6W
P0401: egr. This is a coworkers personal ride) he has been getting poor mileage for last year. Egr code set first and he replaced it. code did not return but after another couple months P0171 and 174 started coming up, so he replaces the front O2 sensors After about every...
March 21, 2008
2002 Mitsubishi Lancer ES 2.0L MIL Lamp on, VIN: ILB2356H45
P0401: Insufficient EGR Flow Detected. Hello, This vehicle has a check engine light problem for egr efficency, We have replaced egr valve (customers request), light came back on, Also the solenoids and intake manifold have been replaced as well. As far as we are concerned everything in the egr syst...
March 29, 2008
1999 Ford E-150 Econoline 4.2L MIL Lamp on, fails emissions
P0401: egr flow. ... found check engine lite not doing bulb check some one yanked bulb!!! Has p0401 in memory!!freeze frame 2300 rpm hot engine closed loop!Replaced pfe sensor pretty common vacum lines are routed correctley still setting code! Checked egr solenoid for vacum su...
March 04, 2008
1996 Honda Accord EX 2.2L MIL Lamp on VIN: 1HGCD5658T
P0401: EGR System Insufficient Flow Detected. Heys guys I believe my egr passage is clogged up. I can take a vacum pump and see my egr valve working and holding vacum. I removed my egr valve and again applied vacum and can see the valve is working. I started the car with the egr valve off and i am not get...
March 05, 2008
1998 Honda Accord LX 2.3L fuel smell VIN: 1HGCG5641W
P0401: EGR System Insufficient Flow Detected. need some honda techs ,keep getting code for leak in fuel tank sytem p1456 ,alldata states gas cap ,or two way valve ,change cap and o-rings for two way valve,code comes back in 20 miles and smell of fuel ,any other help for this would be appreciated ,also a n...
March 10, 2008
1998 Ford Taurus SE Comfort 3.0L Poor Fuel Economy VIN: 1FAFP53S6W
P0401: egr. This is a coworkers personal ride) he has been getting poor mileage for last year. Egr code set first and he replaced it. code did not return but after another couple months P0171 and 174 started coming up, so he replaces the front O2 sensors After about every...
March 21, 2008
2002 Mitsubishi Lancer ES 2.0L MIL Lamp on, VIN: ILB2356H45
P0401: Insufficient EGR Flow Detected. Hello, This vehicle has a check engine light problem for egr efficency, We have replaced egr valve (customers request), light came back on, Also the solenoids and intake manifold have been replaced as well. As far as we are concerned everything in the egr syst...
March 29, 2008