| Symptom | Diagnostic procedure | Also check for | |
|---|---|---|---|
| Excessive engine oil consumption | 1. 2. 3. 4. 5. | Check for loose of the engine oil fill cap, oil drain bolt, and oil filter. Check for oil leaks. Check for worn valve guide(s) or worn valve stem seal(s). Check for damaged or worn piston ring(s). Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.). | |
| Low oil pressure indicator (Red) does not come on with the ignition switch ON (II) | 1. 2. | Do the low oil pressure indicator circuit troubleshooting (Open). Test the oil pressure switch. | An open in the wire between the engine control module (ECM)/powertrain control module (PCM) and the oil pressure switch |
| Low oil pressure indicator (Red) stays on | 1. 2. 3. 4. 5. 6. 7. 8. | Check the engine oil level. Do the low oil pressure indicator circuit troubleshooting (Short). Test the oil pressure switch. Check the engine oil pressure. Check the oil filter for clogging. Check the oil screen for clogging. Check the relief valve. Inspect the oil pump. | A wire shorted to ground between the engine control module (ECM)/powertrain control module (PCM) and the oil pressure switch |