So my truck has been running a little rough lately so I scanned it and it said error in my mass airflow sensor circuit. I am having a hard time finding it...please let me know if you know?

 

should be in btween the turbo and the filter housing inside the piping t least thats the way its been in all the trucks ive worked on

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sorry i just read it a little more carefully thats the mass airflow sensor not the circut srry bud no idea where the circut is

 

There is no Mass air sensor on a 7.3... You have a MAP (Manifold Air Pressure) sensor that is mounted to the cowl on the passanger side, an intake air temp sensor in the intake and a manifold air temp in the Y pipe just before the intake manifolds.

 

Thank you