Question

2008 Ford Crown Victoria 4.6L, what causes the Keep Alive Memory code? I got the engine code P1633

Answer 1

Hi there

This code is usually the result of a bad fuse on the keep alive circuit. This is the circuit that keeps power going to the computer on the car. Normally this is one of the fuses under the hood.

Answer 2

P1633 FORD - Keep Alive Power Voltage Too Low

Read more: https://www.autocodes.com/p1633_ford.html