Engine Oil Pressure Low
Oil pressure in the engine is below the normal range.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
Your engine's oil pressure is too low, which can lead to serious engine damage. The computer monitors the oil pressure to ensure it's between 5 and 30 psi under normal operation, depending on the engine design.
What the computer is actually seeing
The engine control module (ECM) receives a signal from the oil pressure sensor that indicates the oil pressure is below the manufacturer's specified threshold, leading to entries triggering this code.
What a healthy reading looks like
Normal oil pressure values typically range from 20 to 80 psi at operating temperature, depending on the engine.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check the engine oil level first. If low, add oil and retest.
- 2Inspect for oil leaks around the oil filter and engine pan. Repair any leaks found.
- 3Test the oil pressure using a reliable mechanical gauge to confirm the actual oil pressure reading. Should be within 20-80 psi during operation.
- 4If pressure is low, check the oil pump operation and condition.
- 5Replace the oil pressure sensor if the pressures are confirmed but the code persists.
Common causes
- Low oil level
- Faulty oil pressure sensor
- Oil leaks
- Malfunctioning oil pump
- Dirty or degraded oil
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
No, driving with low oil pressure can lead to severe engine damage and should not be delayed.
Will this issue come back after repairs?
If the root cause is fixed (like low oil or a bad sensor), it shouldn’t return.
Why does this code pair with others like SPN 26?
These codes often relate to oil pressure issues and can indicate systemic problems with oil circulation or pressure.
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