thetonka

I have a 2009 R320 bluetec with 145,000 Miles that I am chasing gremlins in. So far most of the problems have been from neglect by the previous owner.

The recent round of issues issues have been chasing frequent LHM episodes. The car has been to several shops who have either made things worse, not had the time, or quoted way too much to shotgun parts.
So I have replaced the following, and each round has resulted in improvements:
Replaced O2 sensor : no more catalyst codes
Fixed turbo actuator : replaced melted filter cap and not more under/overboost codes
Replaced temp sensors in exhaust
Replaced PCV valve : seems to have cut down on oil consumptions but need more time to be sure
Replaced differential pressure sensor : no more differential pressure codes
Replaced EGR pressure sensor

It ran great yesterday but today I got a P0404 code. This translates to an EGR failure or EGR sensor failure. What are the chances the new sensor and valve are bad or I have a bad connection? What else could it be?

Thanks. It seems that replacement of these sensors every hundred thousand miles is a good idea.

thetonka

Hello, is this thing on?

thetonka

Does anyone read this forum?

mtrevelino

There are a few of us that read this forum, but mostly I stick to the W211 forum. I would also try posting on Benzworld.org to see if you get a response from there.
Mike T.

thetonka

Thanks