P0522 Code: Oil Pressure Sensor Low — Causes & Fix
P0522 means the engine oil pressure sensor is reporting a low signal/voltage — which may indicate low oil pressure or a sensor/wiring fault.
- Applies to
- All OBD-II vehicles (any make or model)
- Est. repair cost
- $20 – $400
- Time to fix
- 30 minutes – 2 hours
What it means
Causes include genuinely low oil pressure, a failed oil pressure sensor, low oil level, or wiring faults. P0522 is a generic OBD-II powertrain code defined in the SAE J2012 standard, so it applies to virtually any 1996-or-newer petrol car or light truck regardless of make. Fix the underlying fault, then clear the code with an OBD-II scan tool — it will return if the problem isn't resolved.
Symptoms
- Check engine light and/or oil light on
- Possible engine noise if pressure is truly low
- Warning message
How to fix it
- 1
Check oil level and pressure first
1. Check the oil level immediately. 2. If in doubt, verify actual oil pressure with a mechanical gauge before driving.
- 2
Replace the sensor if pressure is fine
1. If real pressure is good, replace the oil pressure sensor. 2. Clear the code.
Frequently asked questions
Is it safe to drive with P0522?
Not until you confirm real oil pressure. Low oil pressure can destroy an engine fast — verify with a gauge before driving.
Last updated July 19, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.