Self-Diagnostic System: Notes
WARNING: This page is about a different car, the 1999 Pontiac Grand Am and 1999 Oldsmobile Alero. However, it is still accessible from the selected car via links, so may be relevant.
Instrument panel cluster may set Diagnostic Trouble Codes (DTCs) under certain conditions. These DTCs may be retrieved using a scan tool. Other conditions which may set a DTC is a loss of serial data communication with one or more modules on UART data line. See INSTRUMENT PANEL CLUSTER (IPC) DTC DEFINITIONS table. These DTCs may be caused by an open or short in UART serial data line. See appropriate DTC diagnostic procedure.
INSTRUMENT PANEL CLUSTER (IPC) DTC DEFINITIONS
| DTC | Description |
|---|---|
| B1000 | IPC Malfunction |
| B1365 | Ignition 0 Fault |
| B1487 | Generator L-Term Low W/Engine Running |
| B1488 | Generator L-Term High |
| B1492 | Generator F-Term Low |
| B1493 | Generator F-Term High |