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DTC B1971: Inadvertent Power Fault: Description

WARNING: This page is about a different car, the 1998 Cadillac Eldorado and 1998 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

When PZM grounds inadvertent power relay, inadvertent power is commanded on and off. Battery voltage is supplied to components powered by inadvertent power relay when relay is energized.

DTC B1971 will set when inadvertent power relay is commanded on or off and PZM feedback state does not match commanded state for at least 2 seconds. When DTC B1971 is set, PZM will continue to command requested state of relay until it is achieved or no longer necessary. DTC B1971 will clear when PZM feedback state matches commanded state for at least 2 seconds.

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