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      12-09-2012, 04:16 AM   #1
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United Kingdom

Drives: f80 m3
Join Date: Sep 2012
Location: London

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2c9c/d/e/f lambda probe heating codes...

Are people getting these with decatted downpipes?
I've got all 4 codes 2c9c, 2c9d, 2c9e, 2c9f. We're there when downpipes were first fitted.
Eml doesn't come on as jb4 auto clears it. All 4 02 sensors just replaced and the code continues when reading off the jb4 interface. Question for those with downpipes, should I be concerned? Burger tuning says it is a lambda fault so I M perplexed. Fault codes were cleared etc and it still comes back. Do I need to get the thresholds raised?
2013 BMW F31 335D X-DRIVE