When your 2024 Audi Q5 displays the P0303 code, the powertrain control module has identified consistent misfires in cylinder 3. The 2024 Q5 continues with the refined EA888 2.0L turbocharged engine.
2024 Q5 Powertrain
The 2024 Q5 uses the EA888 2.0L TFSI with mild hybrid assistance on some trims. Cylinder 3 is the third from the front on this inline-4. The dual injection system combines direct and port fuel injection.
Typical Causes
- Ignition Coil Problems: Turbo boost stresses ignition components
- Spark Plug Condition: TFSI engines require specific plugs
- Boost System Integrity: Leaks from diverter valve or charge pipes
- Fuel Injector Issues: Dual injection system concerns
- PCV System Failure: Crankcase ventilation problems
Diagnostic Process
Use VCDS or OBDeleven for detailed Audi diagnostics. Monitor misfire counts and boost data. Test ignition components systematically. Check for TSBs addressing known issues on the current platform.
Repair Recommendations
Replace faulty ignition coils with OEM-quality parts. Install Audi-specified spark plugs. Repair boost system leaks. Address PCV failures. Dealer service recommended for warranty coverage.