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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > 2C31 code thrown! Need Help!



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      07-02-2009, 09:46 PM   #1
GGreek5
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2C31 code thrown! Need Help!

Background info: 08 335i, AR catless Dp's, Jb3, o2 Sims, Catless midpipes, Intake.

Got my DP's re-installed after dealer service, and since then I've been throwing this code. I'll clear it with the Bavtech scan tool, then it comes back. Brought it to the place that does some work on my car for me.
They replaced ALL O2 sensors, and the code is still there. Its the lambda probe post cat, trim control.

Any other ideas guys??
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      07-03-2009, 08:21 PM   #2
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What's the description for that fault Ari?
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      07-04-2009, 06:52 AM   #3
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Quote:
Originally Posted by 1clean335i View Post
What's the description for that fault Ari?
//


Terry said it was an issue with the wiring of the 02's or bad 02's. 1 of them was bad, but the mechanic said the code was still there. They ended up replacing all of them, and the code is still there. I thought they might have switched them, but not sure of the mechanic looked into it. It still has full power, except for a slight stutter at idle once in a while, and sometimes while keeping steady speed, it stutters.
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      07-08-2009, 09:44 PM   #4
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      08-05-2009, 01:53 AM   #5
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