2012 F250 6.7 Mass Air Flow sensor No CEL

Bluewaterkeith

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Feb 11, 2017
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Hey guy,

I pulled my Mass sensor to clean it and forgot to plug it back in. Drove for over 100 miles and never got a check engine light. Is that because the tuner bypasses the Mass Air Flow sensor?
 

DieselDog

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Highly unlikely. I'm sure the tuner uses MAF input for their tunes, but they probably removed the OBDII system monitor strategy so the PCM doesn't look for any faults in that particular system.

Sent from my SAMSUNG-SM-G930A using Tapatalk
 

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