Question about 1996 Toyota Camry

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Code P0401 EGR Insufficient Air flow detected - 2000 Toyota camry

The check engine light periodically coming (even if i neutralize it by disconnecting the battery terminal). I notice, if i pump and release the accelerator pedel frequently while on move, the check engine light is not coming but even then I feel loss of power. If the cruse is set on, after 10 minutes the check engine lights up. I changed the EGR valve and EGR sensor and clean the air passages but still the light is on.... Please help me, I am worried!!!

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  • fixya529 Jul 09, 2010

    Did you ever figure this out? I am having the exact same issue.

  • Peter Jul 20, 2013

    Me to. I have changed egr sensor, air flow meter at air filter & same the engine light comes on. When i pull the main efi fuse and put in in an empty slot beside it then it works well =and engine light does not come back on?

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How I change the EGR valve assist switch for toyota camry 2000

Posted on Aug 19, 2010

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My 2000 Camry did the same thing. Behind the EGR valve on the firewall, there is a EGR valve assist switch. (About $80 from Toyota) This fixed my problem.

Posted on Jul 05, 2010

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USE A TOYOTA EGR AND SENSOR MAKE SURE IT IS TOYOTA BRAND NOT AFTER MARKET

Posted on Jul 29, 2009

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Posted on Jan 02, 2017

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SOURCE: insufficient air flow

there's a solenoid under the intake manifold which has vacuum hose connects to egr valve. this solenoid is having a lot of problem.

Posted on May 27, 2010

redds55
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SOURCE: 2000 toyota camry code p0401 change egr valve

First did you reset the computer after replacing the EGR valve if you don't the computer doe'nt reconize the new sensor so it doe'nt reset the peremiters.Then check all passages and lines in the intake manifold there could be a clogg somewhere.Go to www.rockauto.com and you'll find EGR pressure sensor for under $30.00.

Posted on May 17, 2011

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SOURCE: 2000 Toyota Camry failed smog due to MIL

after time the passages plug up with carbon remove the vale start the engine on one port there should be vacuum and the other side should have exhaust blowing out with a coat hanger sized wire run it threw the plugged passage til cleared out also look at the valve to see if it is plugged as well if both passages are clear and the code returns you might need to replace the valve

Posted on Sep 20, 2012

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2 Answers

2000 Toyota Camry failed smog due to MIL


No all you have to do is buy an new egr valve at your local part store and replace it.

Sep 19, 2012 | 2000 Toyota Camry

2 Answers

Check engine light code P0401 98 Ford expedition


OBD-II Trouble Code P0401 - Insufficient EGR Flow

EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR. You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.

A code P0401 most likely means one or more of the following has happened:
The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
There is a blockage in the EGR (tube), most likely carbon buildup
The EGR valve is faulty
The EGR valve may not be opening due to a lack of vaccuum

Check it and keep us updated. Hope this helps (remember to rating this free answer).

Oct 13, 2011 | 1998 Ford Expedition

1 Answer

Check engin light code po401 what does this mean.


P0401= Exhaust Gas Recirculation "A" Flow Insufficient Detected
for more info pls refer to this link http://www.obd-codes.com/p0401
this isn't really nothing major to worry about it just a emission code

Feb 27, 2011 | 1998 Toyota Camry

1 Answer

FAILED EMISSIONS TEST P0401&P0420 CHECK ENGINE LIGHT RESETED MANY TIMES WHEN CUT OFF ENGINE LIGHT COMES BACK ON AFTER 5-6 MILES. I HAVE REPLACED EGR VALVE .STILL WA\ONT PASS INSPECTION. WHATS NEXT?


P0401 indicates that the Exhaust Gas Recirculation Flow Insufficient Detected. This can be because EGR is faulty . As you have replaced this then the problem must be with the vacuum line . EGR valve vacuum line which can be broken or blocked. The vacumn ine must bbe checked for leaks or any blocks using an vacumn pump connected the line.

P0420 indicates that the down stream oxygen sensor reading is not steady and it is connected with the code P0401.

Jan 05, 2011 | 2001 Toyota Camry

1 Answer

I got a code P040 on my 2003 corolla toyota corolla. My check engine light is on. so what does all this mean?


P0401 OBD-II Trouble Code
Insufficient EGR Flow

What does that mean?
EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor (DPF). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR.

Sep 19, 2010 | Toyota Corolla Cars & Trucks

1 Answer

What's wrong with the code P0401 for camry 96


P0401 OBD-II Trouble Code
Insufficient EGR Flow
What does that mean?
EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor (DPF). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR.

May 06, 2010 | 1996 Toyota Camry

2 Answers

Obd codes p0300 p0301 p0303 p0305 p0401


P0401 Exhaust Gas Recirculation Insufficient Flow Detected

P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0305 Cylinder 5 Misfire Detected


I would check out the EGR valve. That maybe what is causing all the misfires.

Mar 24, 2009 | 1997 Toyota Camry

1 Answer

Egr valve insufficient flow detected


You probably pulled a code p0401, insufficient egr flow. Your DPFE sensor is more than likely at fault. There has been a lot of trouble with these sensors. Then reset CEL or disconnect battery for 5 minutes.

Aug 12, 2008 | 2000 Ford Taurus

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