P0520high severityPowertrain
Engine Oil Pressure Sensor/Switch Circuit
on 2016 Tesla Model S P100D Dual Motor AWD · AWD
What this code means
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.
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Bluetooth code reader (~$25)
Veepeak OBDCheck BLE →
Pairs with your phone — reads and clears codes, live data.
Serious DIY (~$100)
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
Shop-grade tablet (~$300+)
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Other Powertrain codes on this vehicle
P0070
Ambient Air Temperature Sensor Circuit
P0071
Ambient Air Temperature Sensor Range/Performance
P0072
Ambient Air Temperature Sensor Circuit Low
P0073
Ambient Air Temperature Sensor Circuit High
P0115
Engine Coolant Temperature (ECT) Sensor 1 Circuit
P0116
ECT Sensor 1 Circuit Range/Performance
P0117
ECT Sensor 1 Circuit Low Input
P0118
ECT Sensor 1 Circuit High Input
P0119
ECT Sensor 1 Circuit Intermittent
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control