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P0401 Diagnostic Trouble Code Discussion for May 2005

Insufficient EGR Flow Detected


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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
2000 Toyota Camry CE 2.2L MIL Lamp on VIN: 4T1BG22K87
P0401: EGR System Insufficient Flow Detected. this car came in with P0401 in the memory, Found the modulator burnt up, replaced it and cleared the codes. Customer came back with the same code, Tested the VSV and the vacume hoses for proper routing and holes,EGR valve was removed and tested and is good, MA...
May 04, 2005
1996 Acura RL 3.5L MIL Lamp on VIN: JH4KA9647T
P0401: EGR System Insufficient Flow Detected. Car has been in several times for P0401. I first checked the fix database and found several similar posts and replies about this problem including TSB's about the extended emissoin warranty, but in this case car had over 158k miles on it so no free trip to the...
May 11, 2005
1998 Toyota Camry CE 2.2L MIL Lamp on, po401 VIN: 4T1BG22K4W
P0401: EGR System Insufficient Flow Detected. toyota techs and all members,this camary is killing me.car came in with ck engine light on,code po401 low flow,replaced modultar and vsv valve,code returned,when i apply vacuum to valve it stalls ungine,ck vac at valve while comanding vsv on i get about 15"...
May 17, 2005
1998 Acura SLX Premium 3.5L Hesitation, Stall, MIL Lamp on VIN: JAEDJ58X0W
P0401: Insufficient EGR System Flow Detected. ... stall sometime and idle rough. check engine light on.i did not happen in shop whole day. rcheck many time.road tested.may have intermittant. i check and found code p0401 egr recerculation flow in sufficent. replaced egr and clear code road tested light bac...
May 18, 2005
1998 Toyota Camry CE 2.2L MIL Lamp on, po401 VIN: 4T1BG22K4W
P0401: EGR System Insufficient Flow Detected. toyota techs and all members,this camary is killing me.car came in with ck engine light on,code po401 low flow,replaced modultar and vsv valve,code returned,when i apply vacuum to valve it stalls ungine,ck vac at valve while comanding vsv on i get about 15"...
May 18, 2005
1996 Honda Accord LX 2.2L Hesitation, MIL Lamp on VIN: 1HGCD5633T
P0401: EGR System Insufficient Flow Detected. THIS CAR WILL ACT UP WHEN IT WANTS TO, FROM A DEAD STOP, I ACCELERATE NORMALLY AND WHEN I GET TO ABOUT 15 MPH IT ACTS LIKE IT'S STARVING FOR FUEL IT JUST BOGGS DOWN AND MAY BACKFIRE THROUGH THE INTAKE, THEN YOU CAN DEPRESS ACCELERATER HARD AND IT WILL TAKE OFF...
May 24, 2005
1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDA5144T
P0401: . ... D.P.F.E.sensor/1 EGR solenoid/1 EGR valve (all original Ford parts) vacuum lines to the EGR solenoid and from the solenoid to the EGR are ok when I run (koer)self-test with a vacuum gauge connected to the EGR vaccum line the vacuum increase to above 5in-hg...
May 25, 2005
2001 Toyota Camry CE 2.2L MIL Lamp on VIN: 4T1BG22K71
P0401: EGR System Insufficient Flow Detected. Car came in with a P0401 EGR flow code. Cleared code and roadtested car and the light came back on. Ran test and replaced vacuum modulator. Cleared code again and roadtested to get monitor to set and light came back on. Ran complete EGR system check as per Toy...
May 31, 2005
2000 Toyota Camry CE 2.2L MIL Lamp on VIN: 4T1BG22K87
P0401: EGR System Insufficient Flow Detected. this car came in with P0401 in the memory, Found the modulator burnt up, replaced it and cleared the codes. Customer came back with the same code, Tested the VSV and the vacume hoses for proper routing and holes,EGR valve was removed and tested and is good, MA...
May 04, 2005
1996 Acura RL 3.5L MIL Lamp on VIN: JH4KA9647T
P0401: EGR System Insufficient Flow Detected. Car has been in several times for P0401. I first checked the fix database and found several similar posts and replies about this problem including TSB's about the extended emissoin warranty, but in this case car had over 158k miles on it so no free trip to the...
May 11, 2005
1998 Toyota Camry CE 2.2L MIL Lamp on, po401 VIN: 4T1BG22K4W
P0401: EGR System Insufficient Flow Detected. toyota techs and all members,this camary is killing me.car came in with ck engine light on,code po401 low flow,replaced modultar and vsv valve,code returned,when i apply vacuum to valve it stalls ungine,ck vac at valve while comanding vsv on i get about 15"...
May 17, 2005
1998 Acura SLX Premium 3.5L Hesitation, Stall, MIL Lamp on VIN: JAEDJ58X0W
P0401: Insufficient EGR System Flow Detected. ... stall sometime and idle rough. check engine light on.i did not happen in shop whole day. rcheck many time.road tested.may have intermittant. i check and found code p0401 egr recerculation flow in sufficent. replaced egr and clear code road tested light bac...
May 18, 2005
1998 Toyota Camry CE 2.2L MIL Lamp on, po401 VIN: 4T1BG22K4W
P0401: EGR System Insufficient Flow Detected. toyota techs and all members,this camary is killing me.car came in with ck engine light on,code po401 low flow,replaced modultar and vsv valve,code returned,when i apply vacuum to valve it stalls ungine,ck vac at valve while comanding vsv on i get about 15"...
May 18, 2005
1996 Honda Accord LX 2.2L Hesitation, MIL Lamp on VIN: 1HGCD5633T
P0401: EGR System Insufficient Flow Detected. THIS CAR WILL ACT UP WHEN IT WANTS TO, FROM A DEAD STOP, I ACCELERATE NORMALLY AND WHEN I GET TO ABOUT 15 MPH IT ACTS LIKE IT'S STARVING FOR FUEL IT JUST BOGGS DOWN AND MAY BACKFIRE THROUGH THE INTAKE, THEN YOU CAN DEPRESS ACCELERATER HARD AND IT WILL TAKE OFF...
May 24, 2005
1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDA5144T
P0401: . ... D.P.F.E.sensor/1 EGR solenoid/1 EGR valve (all original Ford parts) vacuum lines to the EGR solenoid and from the solenoid to the EGR are ok when I run (koer)self-test with a vacuum gauge connected to the EGR vaccum line the vacuum increase to above 5in-hg...
May 25, 2005
2001 Toyota Camry CE 2.2L MIL Lamp on VIN: 4T1BG22K71
P0401: EGR System Insufficient Flow Detected. Car came in with a P0401 EGR flow code. Cleared code and roadtested car and the light came back on. Ran test and replaced vacuum modulator. Cleared code again and roadtested to get monitor to set and light came back on. Ran complete EGR system check as per Toy...
May 31, 2005