Clearing Diagnostic Trouble Codes: Notes

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Manufacturer does not recommend disconnecting the battery to clear Powertrain Control Module (PCM) memory. Disconnecting battery may or may not clear PCM memory, but other memory system memories will be cleared. On many OBD-II systems, PCM will retain memory for an extended period of time even with battery disconnected.