When your 2024 Acura TLX displays the P0303 code, the powertrain control module has identified consistent misfires in cylinder 3. The luxury sport sedan offers powerful turbocharged four-cylinder and V6 options.
2024 TLX Powertrain Options
The 2024 TLX features the 2.0L turbocharged four-cylinder or the Type S's 3.0L twin-turbo V6. Cylinder 3 is the third from the front on the inline-4, and on the driver's side for the V6.
Typical Causes
- Ignition Coil Problems: High boost levels stress ignition systems
- Spark Plug Condition: Turbo engines demand proper plug specification
- Boost System Integrity: Leaks cause lean misfire conditions
- Fuel Injector Issues: Direct injection system concerns
- Carbon Accumulation: GDI engines develop valve deposits
Diagnostic Process
Identify your engine configuration first. Use Acura diagnostics for detailed turbo data. Monitor boost pressure and misfire counts under various conditions. Test ignition components systematically.
Repair Recommendations
Replace faulty ignition coils with OEM-spec parts. Install properly specified spark plugs for turbo use. Repair boost leaks identified during diagnosis. Professional carbon cleaning addresses valve deposits.