When your 2024 Hyundai Tucson displays the P0304 code, the engine control module has detected recurring misfires in cylinder 4. The Tucson offers multiple powertrain options, and identifying your specific configuration is essential for accurate diagnosis of this compact SUV's combustion problem.
Understanding P0304 in the 2024 Tucson
The 2024 Tucson features several powertrain choices: the 2.5L Smartstream four-cylinder, the 1.6L turbocharged hybrid, and the 1.6L turbo plug-in hybrid. All four-cylinder configurations position cylinder 4 at the rear of the engine. Each powertrain has unique characteristics affecting P0304 diagnosis.
Powertrain-Specific Considerations
The 2.5L Smartstream faces standard ignition wear patterns with direct injection carbon accumulation potential. Hybrid variants add electrical system complexity—ensure the hybrid system operates correctly before focusing solely on cylinder 4. Turbocharged engines experience higher ignition demands from boosted pressures. Understanding your specific powertrain guides diagnostic focus.
Diagnostic Methodology
Identify your powertrain configuration before diagnosis. Retrieve all codes including any hybrid system faults that may affect engine operation. Access cylinder 4 components and test ignition coil output and spark plug condition. Verify fuel injector operation. For hybrids, ensure the combustion engine runs in its expected operating modes.
Repair Solutions
Install Hyundai-specified spark plugs appropriate for your powertrain. Replace degraded ignition coils. Address fuel system concerns. Hybrid systems may require dealer diagnosis for complex powertrain integration issues.