OBD2 Automotive Error Code P0520: How to Fix It

Q: Can I drive with P0520 error code?

You should not drive with P0520 as it disables your oil pressure warning system. If actual oil pressure is low, you risk severe engine damage. Have it diagnosed immediately.

Q: How much does it cost to fix P0520?

Fixing P0520 typically costs $50-200 if it's just the sensor, or $200-500 if wiring repairs are needed. Professional diagnosis usually costs $100-150.

Q: What causes oil pressure sensor to fail?

Oil pressure sensors commonly fail due to age, oil contamination, electrical corrosion, vibration damage, or exposure to extreme temperatures over time.

Q: How do I know if my oil pressure sensor is bad?

Signs include P0520 code, erratic oil pressure gauge readings, oil pressure warning light staying on or flickering, or gauge reading zero despite adequate oil level.

Q: Will P0520 cause my car to fail emissions test?

Yes, P0520 will likely cause your vehicle to fail emissions testing as it's an active diagnostic trouble code that indicates a malfunction in an emissions-related system.

Abstract

Error code P0520 indicates a malfunction in your engine's oil pressure sensor or switch circuit. This is a critical issue that affects your engine's protection system, as the oil pressure sensor monitors whether your engine has adequate lubrication.