Sensor Reference Error Code P0642

Discussion in 'Towing, RV's, Campers and 5th Wheels' started by gcglenn, May 14, 2021.

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  1. gcglenn

    Have a 2014 E350 Super Duty Chassis where we are getting a P0642 Check Engine light code . The scanner says this is a Sensor Reference Voltage A circuit Low. Looking for what senors are on the A Circuit.

    I have installed a new battery and a new Ford Alternator, which is putting out only 13.2 volts which may be drawn down by the sensor issue? I think these need 14.4 volt output correct?

    Anyone have an idea what sensors are on the A circuit?
     
    gcglenn, May 14, 2021
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