P0521High urgency
Engine Oil Pressure Sensor Range/Performance
Engine · Lubrication
⛔ Fix promptly — oil pressure monitoring is critical.
What this means
The oil pressure sensor is reading outside its expected range.
Likely causes
- Faulty oil pressure sensorMost common
- Low engine oil levelMost common
- Oil pump failureCommon
- Clogged oil pickup tubeLess common
Estimated repair cost
Oil pressure sensor replacement$75 – $200
Oil change (check level first)$40 – $100
Oil pump replacement$400 – $1,200
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Frequently asked questions about P0521
What does P0521 mean?
The oil pressure sensor is reading outside its expected range.
Is P0521 serious?
Fix promptly — oil pressure monitoring is critical.
How much does it cost to fix P0521?
Repair costs for P0521 range from $75 – $200 depending on the root cause and your vehicle.
Can I drive with P0521?
No — this code indicates a serious issue. Stop driving and have the vehicle inspected immediately.