P0521
Engine Oil Pressure Sensor/Switch Range/Performance
1999-2000 BMW 323i E46 2.5L I6 🇨🇦
High SeverityPowertrain
Description
Oil pressure sensor reading is out of expected range.
Symptoms
- Oil pressure gauge erratic
- Warning light flickering
Common Causes
- Sensor fault
- Oil pressure fluctuating
- Worn oil pump
- Wrong viscosity oil
Diagnostic Steps
- Test with mechanical gauge
- Check oil level and condition
- Test sensor
- Verify correct oil viscosity
Repair Notes
Verify actual pressure. Replace sensor if pressure is good.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0521 on Other Vehicles
Common Questions
What does code P0521 mean on a 1999-2000 BMW 323i E46?
P0521 stands for "Engine Oil Pressure Sensor/Switch Range/Performance". Oil pressure sensor reading is out of expected range.
What are the symptoms of P0521 on a BMW 323i E46?
Common symptoms of P0521 include: Oil pressure gauge erratic, Warning light flickering.
What causes P0521 on a 1999-2000 BMW 323i E46?
Common causes of P0521 include: Sensor fault, Oil pressure fluctuating, Worn oil pump, Wrong viscosity oil.