Note On Intermittents
WARNING: This page is about a different car, the 1993 Cadillac Seville and 1993 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
If code is intermittent, check for short to ground or voltage on circuit No. 229, intermittent open in circuit No. 229 or intermittent loss of power to module.