RAM Engine Error Code P0521: How to Fix It

Q: Can I drive with P0521 code on my RAM truck?

You should not drive with P0521 if the oil pressure warning light is on or if you hear engine knocking. If the engine runs normally and oil level is adequate, you can drive short distances to a repair shop, but avoid extended driving until the issue is resolved.

Q: How much does it cost to fix P0521 on a RAM 5.7 HEMI?

If it's just the oil pressure sensor, expect $50-150 for parts and labor. However, if internal engine components are worn, repairs can cost $2000-5000 or more depending on the extent of damage.

Q: What causes oil pressure sensor failure in RAM trucks?

Common causes include normal sensor wear (typically lasts 100,000+ miles), oil contamination, electrical connector corrosion, or internal engine wear affecting actual oil pressure. Heat cycles and vibration also contribute to sensor degradation over time.

Q: Will P0521 cause my RAM to fail inspection?

Yes, P0521 is an emissions-related code that will typically cause your vehicle to fail state inspections. The check engine light must be off and no pending codes present to pass inspection in most states.

Q: How do I prevent P0521 from happening again?

Regular oil changes with proper grade oil, keeping oil levels adequate, replacing oil filter regularly, and addressing oil leaks promptly can help prevent sensor issues. Also avoid extended high-RPM operation which can stress the oil pressure system.

Abstract

RAM error code P0521 indicates an Engine Oil Pressure Sensor Range/Performance problem, commonly seen in 5.7L HEMI engines. This code means the PCM has detected that the oil pressure sensor reading doesn't match expected values for current operating conditions. While this can be a simple sensor issue, it requires immediate attention to prevent potential engine damage.