Note On Intermittents
WARNING: This page is about a different car, the 1995 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
If Code P058 is intermittent, check for short to ground or voltage on circuit No. 229, intermittent open in circuit No. 229, or intermittent loss of power or ground to PASS-Key(R) decoder module. PASS-Key(R) decoder module reads ignition key once each ignition cycle when ignition is first turned on, therefore, faults in key pellet and circuits to ignition lock cylinder can cause a no start condition but cannot cause a stall or Code P058.