When your 2024 Buick Envision displays the P0303 code, the powertrain control module has identified consistent misfires in cylinder 3. The 2024 Envision continues with the refined 2.0L turbocharged four-cylinder.
2024 Envision Powertrain
The 2024 Envision's LSY 2.0L turbo produces 228 horsepower with direct fuel injection. Cylinder 3 is the third from the timing chain end on this inline-4. The engine benefits from continuous refinement.
Typical Causes
- Ignition Coil Problems: Turbo applications stress ignition systems
- Spark Plug Condition: Must match turbo specifications
- Boost System Integrity: Leaks cause lean misfires
- Fuel Injector Issues: Direct injection concerns
- Carbon Deposits: GDI engines accumulate valve carbon
Diagnostic Process
Use GM diagnostic equipment for detailed access. Monitor boost pressure and misfire data. Test ignition components systematically. Check for TSBs addressing known issues.
Repair Recommendations
Replace faulty ignition coils with AC Delco parts. Install properly specified spark plugs. Repair boost leaks. Dealer service ensures warranty coverage.