Description

Function of the Oil Pressure Sensor

The oil pressure sensor monitors the engine’s oil pressure and sends this information to the dashboard gauge or warning light. Adequate oil pressure is essential for engine lubrication — low pressure means insufficient oil reaching critical components. A faulty sensor gives false readings, either failing to warn of genuinely low pressure or causing an unnecessary warning. Always investigate an oil pressure warning immediately, as running without oil pressure destroys an engine in minutes.

Common Diagnostic Trouble Codes (DTCs)

A generic OBD reader displays the standard 5-character code shown below.

• P0520 — Engine Oil Pressure Sensor/Switch Circuit
• P0521 — Engine Oil Pressure Sensor/Switch Range/Performance
• P0522 — Engine Oil Pressure Sensor/Switch Circuit Low Voltage
• P0523 — Engine Oil Pressure Sensor/Switch Circuit High Voltage

Why order it from Partszar

A faulty sensor, coil or starter feeds the engine the wrong signal, so it runs rich, misfires, will not start or drops into limp mode, and the fault light stays on until it is fixed. Once this is replaced the ECU gets what it expects and the vehicle runs the way it did when it was new.

• Fitment checked before it is listed. Every part is cross-referenced against the official parts catalogue and OEM part number so it fits first time. If your vehicle is listed above, this is the one you need. Not sure? Send us your VIN using the contact form below and we confirm the exact part for free, no obligation.
• Dispatched fast, tracked to your door. In-stock parts leave within 1 to 2 business days and reach you anywhere in South Africa in 2 to 5 business days with tracking. Back-order parts are sourced directly from our supplier, typically 3 to 4 weeks, and we keep you updated by email.
• Genuine GWM part. The same unit the dealer fits, not a copy.
• Decide with confidence. Selected parts carry our 6-month limited guarantee when fitted by an RMI-approved mechanic. Not sure about anything? Contact us below before you order.

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