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p0401

  1. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    So I have a 2000 Camry solara 5s-fe engine and have had the code P0401 for about 3 months. I have changed the egr valve, egr modulator, vsv under the engine and completely taken off the intake manifold and cleaned it to make it like new furthermore the code came back again and again. What could...
  2. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    So I purchased a 99 Solara 5S-FE 5 speed from Florida and drove it home to Texas, no drivability issues whatsoever. The car had the CEL lit (Florida doesn't have emissions testing) and two codes, P0401 and P0446. One seemed related to EGR and the other to the EVAP system. So after a few weeks...
  3. RAV4 1st Generation (1994-2000)
    Getting a P0401 on a 1999 RAV4, but the EGR components and EGR system in general seem to check out OK: - Vacuum applied to the EGR valve causes engine to die at idle. - Vacuum line at EGR valve input shows vacuum that builds with engine speed, then suddenly cuts off, which to me indicates the...
  4. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    Ok guys, I seem to have hit a snag after years of dealing with this EGR system. P0401 1998 Toyota Camry LE 2.2 Steps Taken: 1: Inspected all hoses for cracks/air leaks (None found) 2: Changed out EGR Valve (Was rusted and not lifting when pressure was applied) 3: Changed EGR Modulator (Was not...
  5. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    What tells the ECU/PCM to activate (by using ground) the EGR VSV? Which Sensors? O2, Etc? Thank you
  6. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    Im not having any symptoms other than a CEL. I have checked the EGR valve for blockage, hooked up a vacuum pump to the diaphram side and applied vacuum and car stalled, replaced gasket between valve and intake. I have checkednthe VSV for continuity and got 47 ohms when it was warm and it dropped...
  7. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    So i have a 1999 toyota camry, and came up with a P0401 code. ive cleaned out the EGR valve, and tested the modulator, so i believe the issue is the vsv. After a few useless attempts to remove the old vsv, i decided i would just remount the new one on the firewall, and leave the old one. However...
  8. Corolla 7th Generation (1993-1997)
    Got the p0401 code and the car stutters when stopped and the lights flicker. I have checked: Intake manifold cleaned and cleared egr ports Check vacuum lines Egr valve has been cleaned and check with vacuum pump for valve function and also while the car is running which stalls when vacuum is...
  9. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    Hey Guys you might have being asked by someone else the same question but I am getting more and more confused by my Camry from 1996. In the past 2-3 weeks it happened to show up check engine light and I had no time to go and see mechanics. Today when I went for a small drive around the...
  10. Introduce Yourself Here
    Howdy, I've definitely degraded my eyesight in the past few days reading hundreds of posts on this fantastic Blog. Kudos to the creators and to those who maintain and contribute. A wonderful asset to any Toyota owner! My name's Don and I just bought an 01 Camry CE from a private party for...
  11. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    I'm checking out an EGR code P0401 on a Toyota Camry 1996 2.2L 4 cyl. Found great info on line re how to test, how it operates but from what I read and see it appears on this vehicle the only wired connection to this system is the VSV valve that switches Vac on to EGR from modulator. Saw some...
  12. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    I have a 96 Camry (4cyl, 2.2L, 5S-FE engine), and am stuck on what to do next to clear this p0401 error code. I pulled the EGR valve - it was completely clogged and corroded, so I replaced it. I replaced the air filter in the EGR modulator. The tip of the vacuum sensor assy was cracked, so...
  13. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    Hello everyone, Car: 1996 Toyota Camry LE 2.2L 4-Cylinder. I have three diagnostics trouble codes. Each one coming after another on several occasions each time after clearing the codes. First code to pop up is P0401, Second code to pop up in succession is P0402, Third code to pop up in...
  14. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    I feel like I have tried everything now. It all started back in February 2012, the light came on and I started some research. 1. Removed the EGR Valve, completely cleaned it out and tested it. It works! 2. Purchased on EGR Modulator online and replaced the one in my car. Reset the codes, 20KM...
  15. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    Vehicle: 2000 Camry V6 1MZ-FE I have my mechanic change the Valve covers, PCV-valve, PCV hose, and sparkplugs over the weekend. After he completed the work, I was getting P0401,P1130,P1133,P1135 - reset the codes Now getting P0125,P1135. Mechanic looked at vehicle and told it is likely AF...
  16. Tercel, Paseo, Starlet, and Sera Forum
    Hello. I own a 96 Paseo (manual 5eFe) which has had a P0401 code for quite some time now. I have no drivability issues. I've tried multiple things to try to clear it, including cleaning the ports, checking for vacuum leaks, tested the components with a hand pump. Reset the code after I change...
  17. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    2000 Camry 2.2L 5S FE automatic: Thanks to all the old post and pictures on the P0401 issue. We have done all the testing and replaced EGR valve & EGR modulator and hoses as needed. Testes the VCV 1st and it was Ok. cleaned the TB ports, MAP fuel filter & the PCV verified vacuum and...
  18. Avalon 1st Generation (1995-1999)
    I have been lurking around the forums for a while now and I am in need of some advice. I have had my 95' Avalon coming on 3 years now. I have dumped a lot of money into it for various repairs but I have hit a brick wall with this latest debacle. About a week ago, a friend and I set out to tune...
  19. Camry 3rd and 4th Gen '92-'01, Solara '99-'03
    :headbang: I've got a 1998 Toyota Camry with the 2.2L 4cyl engine, and I'm having a heck of a time chasing down information! I purchased an obd2 bluetooth adapter (Gopoint BT1) to check my CEL code, which was a p0401 (EGR insufficient). The car seems to run fine, gas mileage is around where...
  20. Corolla 7th Generation (1993-1997)
    Hello, I am going through a checklist of tests for a DTC P0401 on my Corolla. I can't find the EGR gas temperature sensor. Is it near the other EGR components, accessible from the top, or do I have to dig the underside of the car? I uploaded a few pictures taken around the EGR valve, using a...
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