POSSIBLE CAUSES
1. Low oil level.
2. Faulty oil pressure sending unit.
3. Low oil pressure.
4. Clogged oil filter.
5. Worn oil pump.
6. Thin or diluted oil.
7. Excessive bearing clearance.
8. Oil pump relief valve stuck.
9. Oil pickup tube loose or damaged.
CORRECTION
1. Check and correct oil level.
2. Replace sending unit.
3. Check pump and bearing clearance.
4. Replace oil filter.
5. Replace as necessary.
6. Change oil and filter.
7. Replace as necessary.
8. Replace oil pump.
9. Replace as necessary.