P0521 on Nissan: How to Diagnose & Fix
Engine Oil Pressure Sensor/Switch Range/Performance
1 Nissan model · 1 documented issue · 1 critical
P0521 on Nissan by model: symptoms, diagnosis and fix
The variable-compression 1.5L VC-Turbo can suffer a manufacturing defect in the main, A-link, C-link, and L-link engine bearings. Higher-than-expected oil temperatures thin the oil and starve the bearings, leading to bearing seizure, rod knock, abnormal engine noise, hard/rough starts, stalling, and ultimately catastrophic engine failure (potentially while driving). NHTSA opened an investigation in December 2023; Nissan issued recall 25V-437 (June 2025, ~443,899 units across Rogue, Altima, QX50 and QX55, including ~348,554 MY2021-2024 Rogues) followed by 26V-080 (Feb 2026, ~323,917 MY2023-2025 Rogues built Oct 2022-Nov 2024). Distinct from the already-covered PCV/oil-smell VC-Turbo issue — this is bottom-end bearing failure. Hundreds of warranty engine-replacement claims logged.
Common Symptoms
- Engine knocking or rattling noise
- Rough or hard starting
- Stalling while driving
- Illuminated check engine / oil pressure light
- Loss of power
- Complete engine failure
How to Fix
Check VIN against Nissan recalls 25V-437 and 26V-080. Remedy varies: dealers inspect the oil pan for metal debris and either reprogram the ECM (with a new oil pan gasket and oil on the 1.5L) or replace the engine assembly free of charge under recall; 25V-437 vehicles also receive a 10-year/120,000-mile warranty extension. Owners hearing rod knock or experiencing stalling should stop driving and arrange dealer service. Out of warranty, a bearing failure typically requires a short-block or full engine replacement.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (4)
- Part 573 Safety Recall Report 25V437 (VC-Turbo bearing failure)recall
- NHTSA recall 26V080 - 2023-2025 Rogue 1.5L VC-Turbo engine bearing failurerecall
- Nissan Recalls 323,917 Units of the Rogue for VC-Turbo Engine Bearing Failurearticle
- It Finally Happened: Nissan VC-Turbo Engine Prompts Massive Recallarticle
P0521 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0521 mean on a Nissan?
P0521 stands for "Engine Oil Pressure Sensor/Switch Range/Performance." This code indicates the engine oil pressure sensor or switch is sending a reading that is implausible or out of its normal operating range — for example, the value doesn't match what the engine's speed and conditions should produce. Unlike a simple circuit fault, this means the signal is present but doesn't make sense (range/performance). It can be caused by a failing sensor, wiring issues, or by genuinely abnormal oil pressure. Because oil pressure protects the engine, a true low-pressure reading should be confirmed and taken seriously. On Nissan it is documented across 1 model: Rogue.
What are the most common causes of P0521?
The most common causes of P0521 are: Faulty or worn oil pressure sensor/switch, Low engine oil level or actual abnormal oil pressure, Wiring or connector corrosion/damage at the sensor, Sludge or debris affecting the sensor reading, Use of incorrect oil viscosity, Failing oil pump, Poor electrical ground. The specific cause varies by vehicle.
How much does it cost to fix P0521 on a Nissan?
Repair costs vary widely with the root cause and Nissan model; each issue on this page carries its own estimate where one is published.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.