PowertrainP0521
SeriousSeverity: Serious - have it checked soon
Engine Oil Pressure Sensor/Switch Circuit Range/Performance
Key terms: SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
The oil pressure reading does not match what the engine computer expects for the engine speed and temperature.
2Common causes
- Faulty oil pressure sensor
- Low engine oil level
- Wrong oil viscosity or a blocked oil filter
- Damaged wiring or connector
- Genuine low oil pressure from a worn engine or failing oil pump
3Can I drive?
Stop the engine as soon as it is safe and have it diagnosed before driving further. The engine may have low oil pressure, which can destroy it within minutes.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 38
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| BAIC Motor | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| Mercedes-Benz | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| BMW | P0521 | Engine Oil Press. Sensor/Switch Range/Performance Brand | Powertrain |
| BYD | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| Chery | P0521 | Engine Oil Pressure Too High Implausible Brand | Powertrain |
| Chrysler | P0521 | Engine oil sensor performance Brand | Powertrain |
| Daewoo | P0521 | Oil Pressure Signal Out Of Range Brand | Powertrain |
| DFFS | P0521 | Engine oil pressure sensor signal failure Brand | Powertrain |
| DFFX | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| DFXK | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| EOBD | P0521 | Motoroljetrykkføler/bryter 'A' område/ytelse Brand | Powertrain |
| Fiat | P0521 | Note: This procedure clears the DTCs and P0524 (engine oil viscosity) immediately after the procedure has been performed Brand | Powertrain |
| Ford | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Geely | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| GM | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| Great Wall | P0521 | Oil pressure sensor signal high Brand | Powertrain |
| Hafei | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| Holden | P0521 | Engine Oil Life Exceeded Brand | Powertrain |
| Honda | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Hyundai | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Isuzu | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Land Rover | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Mahindra | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Maserati | P0521 | Engine oil pressure sensor performance Brand | Powertrain |
| Mazda | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Mitsubishi | P0521 | Oil pressure switch range Brand | Powertrain |
| Opel | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| Peugeot | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Porsche | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Proton | P0521 | Oil pressure switch range Brand | Powertrain |
| Saab | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| MG (SAIC) | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| Smart | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Sprinter | P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance SAE | Powertrain |
| Suzuki | P0521 | Engine Oil Pressure Sensor / Switch Range / Performance Brand | Powertrain |
| Tata | P0521 | Engine Oil Pressure Sensor/Switch Range/Performance Brand | Powertrain |
| Toyota | P0521 | Speed limiter/cruise control button stuck Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 3
These 7-character codes are manufacturer-specific variants of P0521 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | P052100 | Oil pressure sensor error Brand | Powertrain |
| Mercedes-Benz | P052126 | Engine Oil Pressure Sensor/Switch 'A' Range/PerformanceSignaländerungsrate ist unterhalb des zulässigen Grenzwertes. Brand | Powertrain |
| Mercedes-Benz | P052128 | Engine Oil Pressure Sensor/Switch 'A' Range/PerformanceSignal-Offset ist außerhalb des zulässigen Bereiches. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P052xx codes.