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2Addicts | BMW 2-Series forum Technical Topics B58 (M240i) Engine, Transmission, Exhaust, Tuning 20e120 code help??

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      09-20-2023, 06:42 PM   #1
RaddDroid7
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Drives: 2018 M240i
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20e120 code help??

I installed my downpipe and of course I am getting CEL for the cat code. I'm also getting a new code I never saw before.

Code 20E120 - Crankcase Ventilation, vent hose: not connected/faulty.

Even after installing my silicone intake boot and new turbo inlet I didn't get this code. I checked all connections and they are snug, so I am a little stumped here.

Still running stock airbox just with a K&N filter. Any tips?



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