Question

2001 Mercury Sable LS V6 24DOHC, what does the OBD2 code P1633 mean?

Answer 1

HI there,

This code means there was or is a power interrupt on the keep alive circuit for the computer. This could be as simple as a blown fuse or something more like a bad wire for the keep alive circuit on the computer.

Answer 2

P1633 MERCURY - Keep Alive Power Voltage Too Low

Read more: https://www.autocodes.com/p1633_mercury.html