Question

1996 Cadillac SLS with engine code P1644 intermittent, what is the meaning?

Answer 1

Hi there,

This code indicates an issue with the traction control system. Here is some info for you.

P1644 CADILLAC - Traction Control Delivered Torque Output Circuit Conditions
Read more: https://www.autocodes.com/p1644_cadillac.html