97 Acura cl P0401 error code

1997 ACURA CL

230,000 MILES • 6 CYL • AUTOMATIC

GIANTS200

MEMBER
3 POSTS

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.

Jan 25, 2011 at 9:31 PM

RASMATAZ

✓ASE Certified Mechanic
75,992 POSTS

Go to this link:https://www.2carpros.com/topics/electrical/check-engine-light

Jan 25, 2011 at 11:25 PM

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.

Jan 26, 2011 at 12:25 AM

RASMATAZ

✓ASE Certified Mechanic
75,992 POSTS

Could be the computer -

Jan 26, 2011 at 12:42 AM

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?

Jan 26, 2011 at 7:52 PM

KHLOW2008

✓ASE Certified 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.

Jan 27, 2011 at 4:14 PM

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