P0520 on Land Rover
Engine Oil Pressure Sensor/Switch Circuit Malfunction
P0520 on Land Rover vehicles indicates engine oil pressure sensor/switch circuit malfunction. Au7o has documented this code across 1 Land Rover model — most commonly on Defender. This code indicates a general electrical fault in the circuit for the engine oil pressure sensor or switch. The computer monitors this circuit to know your oil pressure, and it has detected a signal that is missing, shorted, or otherwise out of the expected electrical range. This is typically a wiring or sensor problem rather than an actual loss of oil pressure, but because oil pressure is critical to engine life, it should never be ignored until confirmed. If oil pressure truly is low, serious engine damage can result. Typical repair costs on Land Rover range from $1,500 to $6,000, depending on the specific model and root cause.
Common Causes of P0520
- •Faulty oil pressure sensor or switch
- •Damaged, corroded, or loose wiring/connector at the sensor
- •Open or short in the sensor circuit wiring
- •Poor ground connection
- •Low engine oil level or genuinely low oil pressure
- •Failed PCM/ECM (less common)
P0520 on Land Rover by Model
Land Rover Defender(1 issue)
- 2.2 TDCi (EU5) Oil Pump Disintegration / Oil Starvation2012-2014
The Achilles heel of the late 2.2 Puma (the Ford 'Global Puma' / Duratorq DW shared with the Transit). The internal oil pump can break up / lose drive, causing total oil starvation and catastrophic bottom-end failure with very little warning. Early-production EU5 engines (broadly 2012-2013 build, with a defined affected batch) were subject to a Land Rover/Ford service campaign because the original pump design could fail; not every VIN was included and many cars slipped through. A top-end metallic rattle on cold start is often the only early symptom before the engine destroys itself. This is the single failure that turns a £3-4k engine into scrap, so it is the first thing a restorer must verify on a 2012-2016 car.
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What does P0520 mean on Land Rover?▼
P0520 stands for "Engine Oil Pressure Sensor/Switch Circuit Malfunction." This code indicates a general electrical fault in the circuit for the engine oil pressure sensor or switch. The computer monitors this circuit to know your oil pressure, and it has detected a signal that is missing, shorted, or otherwise out of the expected electrical range. This is typically a wiring or sensor problem rather than an actual loss of oil pressure, but because oil pressure is critical to engine life, it should never be ignored until confirmed. If oil pressure truly is low, serious engine damage can result. On Land Rover specifically, this code is documented across 1 model.
What causes P0520 on Land Rover vehicles?▼
Common causes on Land Rover: Faulty oil pressure sensor or switch, Damaged, corroded, or loose wiring/connector at the sensor, Open or short in the sensor circuit wiring, Poor ground connection, Low engine oil level or genuinely low oil pressure. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0520 on a Land Rover?▼
Repair costs on Land Rover range from $1,500 to $6,000, depending on the specific model and root cause.
Which Land Rover models have P0520 documented?▼
Au7o has documented P0520 on 1 Land Rover model: Defender.