A P0302 code on your 2022 Toyota Prius signals cylinder 2 misfire detected by the engine control module. The 2022 Prius continues with the 1.8L 2ZR-FXE hybrid powertrain, making diagnosis similar to other recent Prius models.
2022 Prius Engine System
The 2022 Prius uses the proven 1.8L Atkinson-cycle engine paired with Toyota's Hybrid Synergy Drive. This combination provides excellent efficiency but requires proper ignition system maintenance for optimal performance.
Misfire Causes on Newer Prius
On a relatively new 2022 model, cylinder 2 misfire may result from manufacturing defect in coil or plug, installation error during assembly, fuel injector issue, or less commonly, coolant intrusion from head gasket. Check warranty status for coverage.
Warranty Consideration
The 2022 Prius may still be under warranty depending on purchase date and mileage. Engine misfire issues should be covered under basic or powertrain warranty if the vehicle qualifies.
Diagnostic Path
For DIY diagnosis, the coil swap test effectively identifies ignition failures. The Prius engine bay provides reasonable access to all four cylinders. For warranty-covered repairs, dealer diagnosis documents the issue properly.