P0520 on Jeep
Engine Oil Pressure Sensor/Switch Circuit Malfunction
P0520 on Jeep vehicles indicates engine oil pressure sensor/switch circuit malfunction. Au7o has documented this code across 2 Jeep models — most commonly on Grand Cherokee, Grand Wagoneer. 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.
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 Jeep by Model
Jeep Grand Cherokee(1 issue)
- 2013-2014 Grand Cherokee 3.6L P0520 Oil Pressure Sensor Circuit Service Action2013-2014
On a small number of 2013-2014 Grand Cherokee 3.6L vehicles built on or before March 12, 2014, the malfunction indicator lamp may illuminate with P0520, Engine Oil Pressure Sensor Circuit. FCA's bulletin directs replacement of the oil-pressure sensor with revised part 05149062AA and clearing the stored DTC. This is a circuit-code service action; it is not evidence that every vehicle has low mechanical oil pressure or that the sensor is leaking. The previous card mixed an alleged upper-pan leak, rear-main-seal misdiagnosis, a sensor leak, oil-filter-housing advice, RTV, lower-pan gasket, oil filter, and five sets of generic searches into one issue.
Jeep Grand Wagoneer(1 issue)
- 3.0L Hurricane Twin-Turbo Engine Excessive Oil Consumption2022-2025
Some Grand Wagoneer models with the 3.0L Hurricane inline-six twin-turbo engine exhibit oil consumption exceeding 1 quart per 1,000-2,000 miles, well beyond Stellantis's stated acceptable limit of 1 quart per 2,000 miles. The high-output (510 hp) variant appears more affected than the standard-output version. Contributing factors include the tight piston ring tolerances required for the engine's high compression ratio, PCV system design, and the turbo oil drain-back system. Owners report needing to add oil between regular service intervals.
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View P0520 across all makes →Frequently Asked Questions
What does P0520 mean on Jeep?▼
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 Jeep specifically, this code is documented across 2 models.
What causes P0520 on Jeep vehicles?▼
Common causes on Jeep: 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 Jeep?▼
Repair costs vary widely depending on the root cause and specific Jeep model.
Which Jeep models have P0520 documented?▼
Au7o has documented P0520 on 2 Jeep models: Grand Cherokee, Grand Wagoneer.