Question about 1999 Honda Odyssey

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Cleaned out egr intake and replaced with a non honda egr valve. Check engine light came back on again in one day. Would it be a problem because of being non brand or could it be another problem.

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It's the non-OEM EGR valve. I had the same problem, replaced the EGR valve with one bought at O'Reilly's, light came back on. Spent the $ to have the intake cleaned out too, and light came back on driving home from the shop. Mechanic suggested using a Honda EGR part as it has a different port opening as the non-OEM part. Sure enough, light has stayed out since. Took non-OEM EGR valve back to O'Reilly's and **** enought to get a refund on it.

Posted on Aug 28, 2008

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It is going to be another problem check the map sensor

Posted on Aug 27, 2008

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Ford Escort P1405 Error Code


Are you sure you have EGR flow?? Hold the EGR valve open the engine should run poorly, if not you have no flow.

May 31, 2012 | 1998 Ford Escort

3 Answers

Whats does code P0401 mean ??


Hi,

P0401 means insuffient EGR flow:

EGR stands for Exhaust Gas Recirculation, which basically sends some of the exhaust back into the engine cylinder again. Your error means that there isn't enough of the exhaust gas making it back to the intake manifold.
The first thing I'd check is the tubes coming off of the EGR valve to make sure they aren't clogged or broken. Then I'd check the EGR valve itself and the throttle body. The problem is usually:
1.) Carbon buildup causing a clogging.
2.) Broken hoses.
3.) Broken Valve.

Best regards.

Oct 28, 2010 | 1996 Honda Accord

1 Answer

2006 Honda Pilot. JUST started hesitating when push gas, Lunges one second later. Takes longer cranking. Both only in last 2 days. Engine light too. Codes are P0301, P0302, P0303...P0306, (each...


SOUND LIKE PROBLEM IS EGR VALVE FAILURE.CHECK TO SEE IF EGR VALVE IS GETTING VACUUM. IF ALL IS GOOD EGR VALVE INTAKE OR EXHAUST MANIFOLD PASSAGES ARE RESTRICTED OR THE EGR VALVE IS DEFECTIVE.

Jul 05, 2010 | 2006 Honda Pilot

2 Answers

My check engine light and TCS light came on. Code


P0401: Isufficient Flow Detected in EGR system.
-clean the EGR port with the carburetor cleaner.
-clean the EGR passage inside the EGR valve with the caburetor cleaner.
Reset the light, if the light still coming back, then replace the EGR valve.

Apr 26, 2010 | 2000 Honda Accord

2 Answers

Check engine light comes on and off, auto zone test read back EGR flow insufficient/manufact.specif.DTC/see service manual.what does any of that mean?HONDA ACCORD 4CYL.2001


The EGR valve helps your car more efficiently and completely burn fuel by recirculating a portion of your exhaust and running it through the combustion process again. When the EGR valve goes bad, it must be replaced.

The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. This exhaust mixes with the intake air and actually cools the combustion process. Cooler is always better inside your engine. The exhaust your EGR valve recirculates also prevents the formation of Nitrogen related gases. These are referred to as NOX emissions, and are a common cause for failing emissions testing. Unfortunately, your EGR valve can get stuck, causing NOX gases to build up. You'll know if your EGR valve is stuck or malfunctioning because your car will experience symptoms like rough idle and bucking on acceleration.

Here is a picture of where the EGR Valve is located (Accord 1999). Replacing it is fairly simple and straightforward. A vacuum line and a couple of bolts. You'll see what you have to do when you look at it.

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If you are replacing the EGR Valve due to the Check Engine Light (MIL) being on with a DTC P0401 then I suggest contacting your Honda Dealer. There was a Product Update Campaign (PUD) in the fall of 1999 that corrected the problem.

Another times, the clean is the solution...I hope help yoiu with this. Good luck, and remember rated this help.

Sep 03, 2009 | 2001 Honda Accord

2 Answers

Tcs light and engine check light on my 2000 honda odyssey


I had the same code/symptoms a few weeks ago. Dealer did a nice job checking through all the details. Replaced the egr too, but no improvement. Finally found one cylinder not firing correctly (not the same pressure as the other cylinders.) Dealer did a value clean/adjustment, for about $250, and the problem has been gone for about a month now. We are also getting about 15% better mileage.

Hope this helps.

Aug 03, 2009 | 2001 Honda Odyssey

2 Answers

Check engine light came on codeP0401


Yes, this is a carbon issue. the EGR valve is very sensitive to carbon deposits. i suggest using pressured air to clean out this throttle body before you purchase another valve. it will keep rejecting the egr if its not cleaned.

Mar 07, 2009 | 1996 Honda Accord

1 Answer

2002 accord code P0401 [egr insufficient flow detected]


the code you have may not be due to insufficient lift, more likely you have either high or low voltage running through egr. replace the valve and your issues should go away.

Jan 30, 2009 | 2002 Honda Accord

4 Answers

2000 Honda Accord EGR Valve Error P0401


Jason,
-after you change the part you have to reset/clear the code

-this can be done by either:
(1) using the OBD2 code reader that Autozone used OR since option 2 (below) is very quick
(2) disconnecting the battery for about 30 seconds (this will delete all codes/radio presets/etc) but it will also clear the 'check engine' code
-this is what I do AFTER i write down my radio station presets :)

-hopefully the new EGR valve resolves your issue after you CLEAR the code
...but that code just means a an insufficient amount of Exhaust Gas recirculation (pressure difference) used to keep the emissions in check
-if it comes back, then there are a few other fixes to try also

-let me know if you need further assistance
-please remember to rate me `fix-ya`if it works
thanks

Nov 03, 2008 | 2000 Honda Accord

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