A P0303 diagnostic code on your 2024 Acura RDX indicates the powertrain control module has detected repeated misfires in cylinder 3. The 2024 RDX continues with the refined 2.0L turbocharged four-cylinder engine.
2.0L Turbo Engine Details
The 2024 RDX's K20C6 2.0L turbocharged engine positions cylinder 3 as the third from the timing chain end. This direct-injected turbo engine produces 272 horsepower and requires specific diagnostic approaches.
Typical Causes
- Ignition Coil Problems: High boost pressure demands reliable ignition
- Spark Plug Wear: Turbo applications stress spark plugs
- Boost System Integrity: Leaks cause lean misfire conditions
- Fuel Injector Issues: Direct injection system concerns
- Carbon Deposits: GDI engines accumulate valve carbon
Diagnostic Process
Connect Acura diagnostic equipment for detailed turbo data access. Monitor boost pressure, misfire counts, and fuel trim values. Check for boost and vacuum leaks. Test ignition components systematically.
Repair Recommendations
Replace faulty ignition coils with OEM-spec components. Install properly specified spark plugs. Repair boost system leaks identified during diagnosis. Professional carbon cleaning addresses valve deposits on higher mileage vehicles.