A problem a month...
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Joined: Apr 2008
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From: MD
2008 EVO X GSR
A problem a month...
So every month for the past few months I have had a problem with my car. Last month it was my alternator and last night ensured I will have a problem this month as my CEL came on.
Scanned and got, P0422 & P0432, and a message " main catalyst efficeny below threshold"
My exhaust is set up with high flow cats in place of the primary and then straight pipes back to the oem muffler. I don't know if the cats are ceramic or metallic but I have a feeling they are ceramic which maybe the problem.
Any input is appreciated and I plan on going to the dealer and my indie,thanks!
Scanned and got, P0422 & P0432, and a message " main catalyst efficeny below threshold"
My exhaust is set up with high flow cats in place of the primary and then straight pipes back to the oem muffler. I don't know if the cats are ceramic or metallic but I have a feeling they are ceramic which maybe the problem.
Any input is appreciated and I plan on going to the dealer and my indie,thanks!
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Joined: Dec 2008
Posts: 200
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From: Connecticut
1991 300CE
I'd say it is oxygen sensors. That is what happened on my 530i a few years ago. I thought I needed a new cat, but the O2 sensors were shot and were giving the car a bad reading. I changed the O2 sensors and the codes never reappeared.
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Joined: Apr 2008
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From: MD
2008 EVO X GSR
I thought that a code would come specifically from the O2 sensors not just a code stating the fail of the cats. Thanks though, I'm going to mercedes today to have them scan everything and hopefully they will be able to pin point which 02 sensor or what not. But if all else fails i will just through some straight pipes on.
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From: City with Tall buildings!
C43/55,2k11 Volvo S60 T6AWD,2k Audi B5 S4,95 Eagle Talon Tsi AWD 500+awhp
I thought that a code would come specifically from the O2 sensors not just a code stating the fail of the cats. Thanks though, I'm going to mercedes today to have them scan everything and hopefully they will be able to pin point which 02 sensor or what not. But if all else fails i will just through some straight pipes on.
MBWorld Fanatic!
Joined: Feb 2004
Posts: 5,475
Likes: 5
From: City with Tall buildings!
C43/55,2k11 Volvo S60 T6AWD,2k Audi B5 S4,95 Eagle Talon Tsi AWD 500+awhp
So every month for the past few months I have had a problem with my car. Last month it was my alternator and last night ensured I will have a problem this month as my CEL came on.
Scanned and got, P0422 & P0432, and a message " main catalyst efficeny below threshold"
My exhaust is set up with high flow cats in place of the primary and then straight pipes back to the oem muffler. I don't know if the cats are ceramic or metallic but I have a feeling they are ceramic which maybe the problem.
Any input is appreciated and I plan on going to the dealer and my indie,thanks!
Scanned and got, P0422 & P0432, and a message " main catalyst efficeny below threshold"
My exhaust is set up with high flow cats in place of the primary and then straight pipes back to the oem muffler. I don't know if the cats are ceramic or metallic but I have a feeling they are ceramic which maybe the problem.
Any input is appreciated and I plan on going to the dealer and my indie,thanks!
I have the same issue as well.
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Joined: Apr 2008
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From: MD
2008 EVO X GSR
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Thread Starter
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Joined: Apr 2008
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From: MD
2008 EVO X GSR
So the other night while out on a drive my CEL turned off.. I'm not complaining but I would like to know why? anyways I'm using all of this as an excuse to put on an x-pipe and because of that I'll have an opportunity to look at the cats.
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MBWorld Fanatic!
Joined: Feb 2004
Posts: 5,475
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From: City with Tall buildings!
C43/55,2k11 Volvo S60 T6AWD,2k Audi B5 S4,95 Eagle Talon Tsi AWD 500+awhp
Thread Starter
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Joined: Apr 2008
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From: MD
2008 EVO X GSR
How do these anti foulers work? thanks! I'm going to be doing this as soon as my shop can take my car. Also, When the o2 sensors aren't working or are reading errors, does that affect how the car drives? again thanks!
