P040 with new EGR - help
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Member
Joined: Apr 2015
Posts: 87
Likes: 2
From: SoCal
R320 Bluetec
P0404 with new EGR - help
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.
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.
Last edited by thetonka; Oct 11, 2017 at 09:06 PM.
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Joined: Jan 2010
Posts: 563
Likes: 31
From: The Villages, Florida
2006 E320 CDI
