The P0302 code on your 2022 Nissan Rogue indicates that cylinder 2 is experiencing misfires detected by the engine control module. The third-generation Rogue introduced for 2021 features the 1.5L VC-Turbo three-cylinder engine (KR15DDT) with Nissan's variable compression technology, replacing the previous 2.5L four-cylinder. This represents a significant change in diagnostic approach.
Understanding the 1.5L VC-Turbo
The 1.5L VC-Turbo is an inline-3 cylinder engine with variable compression ratio capability ranging from 8:1 (high performance) to 14:1 (high efficiency). Cylinder 2 is the center cylinder. This turbocharged direct-injection engine produces 201 horsepower while delivering good fuel economy through compression ratio optimization.
Three-Cylinder Misfire Characteristics
With only three cylinders, each contributes 33% of total power. When cylinder 2 misfires, symptoms are very pronounced compared to four or six-cylinder engines. The engine may feel significantly unbalanced, with strong vibrations and noticeable power loss.
VC-Turbo Misfire Causes
The variable compression system can develop issues affecting individual cylinders. Direct injection carbon buildup on intake valves is common on DI engines. Turbocharger boost irregularities can cause lean misfires. Ignition coil and spark plug failures affect combustion directly. The multilink mechanism that adjusts compression ratio is an additional potential failure point.
Diagnostic Approach
Comprehensive scanning including Nissan-specific codes is essential. Monitor compression ratio actuation and boost pressure using compatible scan tools. Inspect spark plug and ignition coil on cylinder 2. Test fuel injector operation and verify proper coding. Check for boost leaks that could affect cylinder 2.
Repair Considerations
Standard ignition repairs include spark plug and coil replacement. VC-Turbo-specific issues require Nissan dealer diagnosis with specialized equipment to evaluate the variable compression system. Given the 2022 model year, most repairs should be warranty-covered. Direct injection carbon cleaning may be needed on higher-mileage vehicles.