P0520
Engine Oil Pressure Sensor/Switch Circuit
1999-2000 BMW 323i E46 2.5L I6
High SeverityPowertrainGeneric (SAE)
Description
Malfunction in the engine oil pressure sensor circuit.
Symptoms
- Check Engine Light
- Oil pressure warning light on
- Gauge reading incorrect
Common Causes
- Faulty oil pressure sensor/switch
- Wiring damage
- Low oil level
- Low actual oil pressure
Diagnostic Steps
- CHECK OIL LEVEL FIRST
- Test oil pressure with mechanical gauge
- Test sensor resistance
- Inspect wiring
- Check oil pump condition
Repair Notes
ALWAYS verify actual oil pressure with mechanical gauge first. Low oil pressure can destroy an engine.
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
P0520 on Other Vehicles
Common Questions
What does code P0520 mean on a 1999-2000 BMW 323i E46?
P0520 stands for "Engine Oil Pressure Sensor/Switch Circuit". Malfunction in the engine oil pressure sensor circuit.
What are the symptoms of P0520 on a BMW 323i E46?
Common symptoms of P0520 include: Check Engine Light, Oil pressure warning light on, Gauge reading incorrect.
What causes P0520 on a 1999-2000 BMW 323i E46?
Common causes of P0520 include: Faulty oil pressure sensor/switch, Wiring damage, Low oil level, Low actual oil pressure.