Engine Lubrication System Symptom Troubleshooting Index

Symptom	Diagnostic procedure	Also check for
Excessive engine oil consumption	1. Check for oil leaks. 2. Check for worn valve guide(s); or worn valve seal(s) . 3. Check for a damaged or worn piston ring(s) . 4. Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.) .	Check the maintenance records as engine oil that is worn out burns off at a higher rate
Low oil pressure indicator does not come on with the vehicle in the ON mode	1. Do the symptom troubleshooting for low oil pressure indicator does not come on with the vehicle in the ON mode - Refer to: Engine Lubrication System Symptom Troubleshooting - Low oil pressure indicator stays on Engine Lubrication System Symptom Troubleshooting - Low oil pressure indicator does not come on with the vehicle in the ON mode . 2.Test the oil pressure switch .	An open in the wire between the PCM and the oil pressure switch
Low oil pressure indicator stays on	1. Check the engine oil level . 2. Do the symptom troubleshooting for low oil pressure indicator stays on - Refer to: Engine Lubrication System Symptom Troubleshooting - Low oil pressure indicator stays on Engine Lubrication System Symptom Troubleshooting - Low oil pressure indicator does not come on with the vehicle in the ON mode .	A wire shorted to ground between the PCM and the oil pressure switch