Got a code 400?
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 905
Likes: 0
From: Started out together Now we're both retired
St. Jude Donor '06
Help with a code 400?
Pulling into my drive this morn, and my "service engine soon" lite comes on. Cars running like a top. So, I put my trusty code reader on and I get a 0400 followed by ..COOL SYS.. 1. Then it repeats. According to the book a 400 says...Exhaust Gas Recirculation Flow Malfunction... Anyone familiar with this one? First peep I've gotten out of the car, 96 LT1 A4, in the 9 months I've owned it.
Last edited by chimknee; Aug 27, 2005 at 01:47 PM. Reason: change
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
that means it's gonna blow up, and you have to give it to me before it does. 
Actually, that's and EGR code. I would reset the codes and monitor. If it comes back, more then likely, it's the EGR valve.
You need a copy of the factory service manual - www.helminc.com.
Actually, that's and EGR code. I would reset the codes and monitor. If it comes back, more then likely, it's the EGR valve.
You need a copy of the factory service manual - www.helminc.com.
