Code E13: Oxygen Sensor Not Ready: Notes
WARNING: This page is about a different car, the 1990 Cadillac Fleetwood and 1990 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If Code E13 is accompanied by intermittent or hard Code E45, use Code E45 fault chart to diagnose. If Code E13 is accompanied by intermittent or hard Code E44, use Code E44 fault chart to diagnose.