Circuit Description
WARNING: This page is about a different car, the 1998 Pontiac Bonneville, 1998 Oldsmobile Regency, 1998 Oldsmobile LSS, 1998 Oldsmobile Eighty-Eight, and 1998 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
This DTC is used to determine when the EBCM has lost the ability to provide rough road data to the PCM for misfire detection. When the PCM sees that this condition is present, through the serial data, DTC will set.