2014 Dodge Ram 1500 5.7 Hemi Low Oil Pressure Issue Explained

Low oil pressure around 30 psi on a 2014 Ram 1500 5.7 Hemi is borderline low but not catastrophic. The most likely cause is low or degraded engine oil or a clogged oil filter restricting flow. If oil level and filter check out, the next suspect is a worn oil pump or a faulty oil pressure sensor giving a false reading.

Most likely culprits

• Low or dirty engine oil: Low level or old oil loses viscosity, dropping pressure.
• Clogged oil filter: Restricts oil flow, causing pressure to drop.
• Worn oil pump: Internal wear reduces pump output, lowering pressure.
• Faulty oil pressure sensor: Sensor or wiring failure can give false low readings.

How to narrow it down

1. Check engine oil level and condition with dipstick. Low or dirty oil? Top off or change oil and retest pressure.
2. Replace oil filter if it’s old or unknown history, then recheck pressure.
3. Use a mechanical oil pressure gauge at the oil pressure sender port to verify actual pressure. If mechanical gauge reads normal (40-60 psi at idle), sensor or wiring is faulty.
4. If mechanical gauge confirms low pressure, inspect for oil pump wear or internal engine issues (bearing clearances, oil passages).
5. Check for oil pressure warning light or codes with a scan tool to rule out sensor wiring faults.

Possible parts (if needed)

• Engine oil (correct grade and spec)
• Oil filter
• Oil pressure sensor/sending unit (only if mechanical gauge shows normal pressure)
• Oil pump (only if mechanical gauge confirms low pressure after oil/filter service)

A few questions

• What is the oil level and condition right now? When was the last oil change?
• Does the oil pressure gauge or warning light behave erratically or stay steady?
• Have you checked pressure with a mechanical gauge or just the dash gauge?