97 Acura CL P0401 error code

Tiny
GIANTS200
  • MEMBER
  • 1997 ACURA CL
  • 6 CYL
  • AUTOMATIC
  • 230,000 MILES
Hi, I have a 97 Acura CL 3.0 and my check engine light went on few months ago with error code P0401 (EGR Insufficient flow). Did some research online and people suggested if I clean the EGR ports/passage and replace the EGR valve the problem should be fixed. I did all those but the check engine light came back on again after 100 miles. Can anyone advise what I can do next? Do I need to check for other parts as well or replace the tubes? Thanks in advance.
Tuesday, January 25th, 2011 AT 9:31 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Go to this link:https://www.2carpros.com/topics/electrical/check-engine-light
Was this
answer
helpful?
Yes
No
Tuesday, January 25th, 2011 AT 11:25 PM
Tiny
GIANTS200
  • MEMBER
  • 3 POSTS
Thanks for the reply. I did all the things the other link recommended (cleaned the EGR ports, passages, new EGR valve). But the error code still came back on after 100 miles. Any idea what else could be the problem? Thanks.
Was this
answer
helpful?
Yes
No
Wednesday, January 26th, 2011 AT 12:25 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be the computer -
Was this
answer
helpful?
Yes
No
Wednesday, January 26th, 2011 AT 12:42 AM
Tiny
GIANTS200
  • MEMBER
  • 3 POSTS
Thanks rasmataz. If the problem is the computer, is that mean I need to bring it to a shop to get it fixed?
Was this
answer
helpful?
Yes
No
Wednesday, January 26th, 2011 AT 7:52 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Problem returned after 100 miles, there is a possibility the job of cleaning was not thorough, especially under the EGR valve.

The ports are rather difficult to be cleaned thoroughly unlessyou have something to dig into it.
Was this
answer
helpful?
Yes
No
Thursday, January 27th, 2011 AT 4:14 PM

Please login or register to post a reply.

Related P0401 Content