Engine Oil Pressure Gage
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The instrument panel cluster (IPC) displays the engine oil pressure as determined by the engine control module (ECM). The IPC receives serial data messages from the ECM indicating the engine oil pressure. The engine coolant temperature gage defaults to 0 kPa (0 psi) or below if:
- The ECM detects a malfunction in the engine oil pressure sensor circuit.
- The IPC detects a loss of serial data communications with the ECM.