EGR Replacement

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Johnny O

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Jan 22, 2005
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I am continually getting a code P401 EGR malfunction. Does this mean I need a new EGR valve? It is hard to change? Looked on YouTube and it seems like it's not too bad but you have to take the throttle body off to get to it. Thanks.
 
its on the back Passenger side, Gavin ( canada) had the same issue..... Change the valve and also check the vacuum lines for damage or coming off...
 
Could it be carboned up. Could try cleaning it. The use some sort of vaccum to stroke it. Also Isnt there an electronic regulator that makes it acutuate. I cant remember the name of it. it controls the vaccum modulation. Just a thouht...
 
I just did this. Mine has 145K on it and I continually got the 401 code when the temp outside is under 85 degrees. I got a new OEM EGR valve from Amazon - I didn't want to chance a cheap aftermarket part, I've read they aren't as reliable as the OEM and I didn't want to do this job twice. A "while you're in there" list would be to change your air filter if it is old and also clean up the throttle body. I had a hard time unscrewing the pipe from the valve. I used a turbo torch on the EGR valve where the pipe goes in but the fuel line is right behind it so I needed to cover it and be very careful - if I were to do it again I'd probably run the engine up to temp and then unscrew it while things are hot. The two bolts holding the valve on were also a pain but I finally got it. When I was done I still had the light. I shut it off with my code reader and it has not been on since.
 
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