cel code tonight! P0400. Egr flow malfunction?

[98quicksilverGT]

I got a cel code tonight! P0400. Egr flow malfunction. Any ideas?

[New GT]

Take the EGR tube out and make sure it is not clogged.

[green97gt]

yeah, 9 out of 10 times this can be cleared up by running seafoam, or something like it thru the flow tube.

[98quicksilverGT]

Ok, I'll pull it apart Sunday evening. Have to work all day.
Thanks alot!!

[anothernord]

Seafoam is great stuff.

Also, take the valve off and use something to clean the stuff out of the inside of it.

[dplacencia]

Its the plastic piece up top. The one that looks like a disc. Change that and you wont have any more problems. I have had 3 subarus already with the same code. I replace that and its all good.

[98quicksilverGT]

What is that thing anyway!

[1996LGT]

I had the same problem with my 96 lgt< tried bpt,silenoid, cleaned everthing. Found small filter inline in the vacum line from mass air flow to throttle body inline, backfushed it with carb cleaner, p0400 has now gone away. :smt005