A P0302 code on your 2022 Volkswagen Jetta indicates the engine control module has detected misfires in cylinder 2. The Mk7 Jetta uses the EA211 1.5L TSI turbocharged four-cylinder with Active Cylinder Technology. This modern powerplant has specific diagnostic considerations for misfire resolution.
EA211 1.5L TSI Overview
The 1.5L TSI produces 158 horsepower with turbocharging and direct injection. Cylinder 2 is second from the timing end and is one of the cylinders that can be deactivated by ACT during cruising. The cylinder deactivation system uses special lifters and oil pressure control.
Common Misfire Causes
ACT system component failures can cause cylinder-specific misfires. Direct injection carbon buildup develops on intake valves. Ignition coil degradation affects spark delivery. Spark plug wear reduces ignition energy under boost. Turbo boost irregularities affect combustion.
Symptom Recognition
The compact sedan displays rough idle, vibration, and hesitation with misfires. ACT-related misfires may be more noticeable during highway cruising when the system activates. Check engine light accompanies the condition.
Diagnostic and Repair Approach
Use VAG-compatible diagnostics to monitor ACT operation. Inspect ignition components on cylinder 2. Test fuel system. Verify boost pressure. Given the newer model year, warranty coverage should apply to defect-related issues.