How many volts should be at the mass airflow sensor?
How many volts should be at the mass airflow sensor? Depending on your MAF sensor, your voltage reading should be between 0.60 to 0.80 volts at idle. If your reading indicates 12 volts or pretty close to it, you are probing the power wire, not the signal wire). What does p0401 stand for on a Ford F150? P0401 is a common OBDII trouble code that’ll pop up in the Ford F150. It has to do with the emissions system and stands for: It has to do with the emissions system and stands for: P0401: EGR → Insufficient Flow Which is...