1999 Ford F150 4.2L with code P1633, sensor or what?

Question

I have a 1999 Ford F150 4.2L XLT 6 Cyl 2wheel drive the code that is showing up is P1633 is it a sensor or what

Answer 1

This is more of a circuit power, to help resolve this clean the battery terminal.

Battery terminals and the battery state of charge are the main cause for code conditions such as P1633/ P0603. Check the battery terminal for proper connection and cleanness

P1633 FORD - Keep Alive Power Voltage Too Low
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