C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

Loss of power, rough idle, and stall at parking speeds

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Old 08-22-2017, 11:51 PM
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2008 W204
Loss of power, rough idle, and stall at parking speeds

I've had the above symptoms in recently...

I check my codes and got:

0942 - The efficiency of the right catalytic converter is insufficient.

0230 - Due a possible leak in the intake air system, an implausible signal was received from oxygen sensor 1 (cylinder bank 1)

I cleared the codes and the only one that came back today was 0230...

Any idea what this could be? I think the catalytic converter is ok for now and was only affected by the intake leak... is the intake leak consistent with the flap breaking in the manifold? Seems to be a bit different, and the code is different than 2004, 2005 and 2006.

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