LEMON Manuals: Even more car manuals for everyone
Home >> Oldsmobile >> 2001 >> Bravada >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Anti-Theft System) >> Diagnostic Tests >> DTC P1631: Powertrain Control Module Detects Incorrect Password >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2001 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

DTC P1631 indicates vehicle theft deterrent password stored in Powertrain Control Module (PCM) does not agree with password received from Vehicle Theft Deterrent (VTD) system. This condition can occur if an incorrect key is used while attempting to start vehicle, or Instrument Panel Cluster (IPC) has been replace and PCM password learn function has not been enabled. If IPC had been replace, password must be relearned.

scientia non olet · About LEMON Manuals