Low oil pressure indicator (Red) stays on
Diagnostic procedure
  1. Check the engine oil level.
  2. Do the low oil pressure indicator circuit troubleshooting (Short).
  3. Test the oil pressure switch.
  4. Check the engine oil pressure.
  5. Check the oil filter for clogging.
  6. Check the oil screen for clogging.
  7. Check the relief valve.
  8. Inspect the oil pump.
Also check for
  • A wire shorted to ground between the ECM and the oil pressure switch