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Check engine light on shows code p0101 and p11cb and p140c
Vehicle: 2016 Chevy 2500hd 6.6lml

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P0101 MAF sensor performance

P11CB Nox Sensor  1 performance signal high

P140C Exhaust gas recirculation (slow response)

The correction for these code is to start with the MAF sensor, A faulty MAF will set a P11CB and P140C.. When it comes to the MAF sensor inspect for a secured MAF air duct in being secured.

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