Failure Conditions
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1991 Oldsmobile Toronado, 1991 Cadillac Seville, 1991 Cadillac Eldorado, 1991 Buick Riviera, and 1991 Buick Reatta. However, it is still accessible from the selected car via links, so may be relevant.
History Code 33 will set if voltage at 36-Volt Loop Reserve (36VLR) of Diagnostic Energy Reserve Module (DERM) is equal to IGNITION 1 voltage (+/-2 volts) within first 500 milliseconds after ignition is turned on, 3 cycles in a row. History Code 33 will not set if a History Code 51 is set.