The 2022 Audi Q5 delivers premium compact SUV capability with its responsive 2.0L TFSI turbocharged engine. When your Q5 displays a P0304 code indicating a cylinder 4 misfire, understanding the TFSI engine helps guide accurate diagnosis.
Understanding P0304 in the Q5
The Q5's 2.0L TFSI engine combines turbocharging with direct injection for excellent power and efficiency. Cylinder 4 is located at the rear of the inline-4 engine, nearest the firewall. The engine control module monitors combustion with precision.
TFSI Engine Considerations
TFSI engines can develop carbon buildup on intake valves due to direct injection. The turbocharged environment accelerates spark plug wear. Both factors contribute to potential misfire conditions that systematic diagnosis can identify.
Diagnostic Approach
Access the cylinder 4 ignition coil at the engine's rear. Inspect spark plug condition. Check for boost leaks in the charge piping. On higher-mileage vehicles, intake valve carbon inspection may be warranted.
Resolution Process
Replace spark plugs with Audi specifications. Test ignition coil output. If carbon buildup is suspected, cleaning may be necessary. Address any boost leaks identified.