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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 05-03-2013, 03:18 PM   #1
Nicks330i
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Join Date: Apr 2012
Location: Katy Texas
Posts: 30
My Ride: 330i
E46 M3 smg getting P0430 and P0430

Hey guys I'm getting these two codes only during highway driving I gotten them like 2 times if I reset the check engine and I drive it in the city this problem never occurs might the cats be actually be bad or is it my o2 sensors


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Old 05-03-2013, 04:06 PM   #2
Slyde
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Join Date: Jan 2010
Location: Seattle, WA, USA
Posts: 89
My Ride: 2001 M3 TiAg
I get the same code (It is one code, right? Or am I going crazy? Do you mean current/pending?) every few months. I also get it on highway driving periods of light throttle. It seems rather minor and maybe just a glitch from lethargic driving. I tend to correct any of the car's faults immediately and entirely, but I have let this one slip by.

I just reset it, but I am also interested in the solution.
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Last edited by Slyde; 05-03-2013 at 04:09 PM. Reason: question about redundancy of "P0430" as "two codes"
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Old 05-03-2013, 05:23 PM   #3
Nicks330i
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Join Date: Apr 2012
Location: Katy Texas
Posts: 30
My Ride: 330i
E46 M3 smg getting P0430 and P0430

Yea I just got the car not too long ago I replaced bank2 sensor 2 because the heater was out but these two only pop up when I'm driving in the highway I'm hoping it has nothing to do with the cats or else all just go catless and tune the f****er so I stop having these codes lol.


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