P0401 Code
#1
Registered!!
Thread Starter
Join Date: Dec 2009
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 P0401 Code
So.....i just bought a 2005 LX Special Edition automatic 1.7L
The day after i purchased it the damn engine light came on, my friend had a code reader thing and it came up as a P0401.....??
I think that means that i need a EGR valve and gasket??
Is that correct? Could it be anything else or different?
Please help : )
The day after i purchased it the damn engine light came on, my friend had a code reader thing and it came up as a P0401.....??
I think that means that i need a EGR valve and gasket??
Is that correct? Could it be anything else or different?
Please help : )
#2
Premium Member
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (95)
Join Date: Sep 2002
Location: NV
Age: 43
Posts: 51,241
Likes: 0
Received 18 Likes
on
13 Posts
Rep Power: 787 Re: P0401 Code
P0401 Exhaust Gas Recirculation Flow Insufficient Detected
that means the EGR valve is clogged. you can take it off and try to spray carb cleaner inside, it might work. if not, you need a new one. they are easy to change, just remove the two nuts. prolly can reuse the old gasket too so long as its not falling apart. the EGR valve is the piece with the bluish sticker on it and grey connector.
that means the EGR valve is clogged. you can take it off and try to spray carb cleaner inside, it might work. if not, you need a new one. they are easy to change, just remove the two nuts. prolly can reuse the old gasket too so long as its not falling apart. the EGR valve is the piece with the bluish sticker on it and grey connector.
#3
Registered!!
Join Date: Dec 2009
Location: Denver, CO USA
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 Re: P0401 Code
To GEARBOX>> I'm missing my EGR system on my 96 EX altogether. I cant find any left in a junk yard and haven't seen one come into work yet. Running out of time on emissions... Got any pic for earlier models? I'm feelin' way screwed right now and would love the help.
#4
Premium Member
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (95)
Join Date: Sep 2002
Location: NV
Age: 43
Posts: 51,241
Likes: 0
Received 18 Likes
on
13 Posts
Rep Power: 787 Re: P0401 Code
well just the valves are around $150 new from what ive seen, do you even have a place for it on the engine? i think only the 96-00 HX civics had egr systems. i found this one for cheap... but i think your car didnt come with it.
http://cgi.ebay.com/ebaymotors/1996-...Q5fAccessories
http://cgi.ebay.com/ebaymotors/1996-...Q5fAccessories
#6
Premium Member
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (95)
Join Date: Sep 2002
Location: NV
Age: 43
Posts: 51,241
Likes: 0
Received 18 Likes
on
13 Posts
Rep Power: 787 Re: P0401 Code
it could be yes. the egr also cools the exhaust gas, but its main function is reducing harmful emissions. if its clogged tho, and the engine light is on, the car will never be getting its best gas mileage.
#7
Registered!!
Thread Starter
Join Date: Dec 2009
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 Re: P0401 Code
So i got the new EGR and after 38 miles the light cam back on....we took it off cleaned the crap out of the area....reset the code and it still came on after 38 miles....what else could it be??
#8
Premium Member
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (95)
Join Date: Sep 2002
Location: NV
Age: 43
Posts: 51,241
Likes: 0
Received 18 Likes
on
13 Posts
Rep Power: 787 Re: P0401 Code
hmm it could be the engine passages that are clogged then, but im not sure what you can do about it. maybe spray carb cleaner into those two holes in the engine block. let it sit for a while and spray more. wait at least an hour before putting the egr back on and starting the car for the solvents to evaporate.
#13
Re: P0401 Code
i am having the same problem how would i check the sensor or the connection i just replaced my head gasket i put everything back together then as soon as i started my car the cel came on the code was p0401 so i changed the (GASKET, FR. WATER PASSAGE) and hooked everything back up and same problem so i just changed the egr and now still the cel is still coming on what can i do. any help would be appreciated
#21
Premium Member
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (95)
Join Date: Sep 2002
Location: NV
Age: 43
Posts: 51,241
Likes: 0
Received 18 Likes
on
13 Posts
Rep Power: 787 Re: P0401 Code
goto any forum where you want to start a thread and then click the 'post new thread' button at the top.
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
Civic15
Mechanical Problems/Vehicle Issues and Fix-it Forum
18
09-19-2017 07:48 PM
Dangerousjordan
Mechanical Problems/Vehicle Issues and Fix-it Forum
6
07-30-2015 11:19 AM
jessica19699
Mechanical Problems/Vehicle Issues and Fix-it Forum
9
07-29-2015 05:51 AM
Green02civic
Mechanical Problems/Vehicle Issues and Fix-it Forum
13
07-27-2015 10:48 PM