The 2022 Volvo S60 delivers luxury sport sedan performance with Volvo's versatile 2.0L four-cylinder platform. When your S60 displays a P0304 code indicating a cylinder 4 misfire, understanding your configuration helps guide accurate diagnosis.
Understanding P0304 in the S60
The S60 uses Volvo's 2.0L four-cylinder in T5 (turbo), T6 (turbo + supercharger), or Recharge (hybrid) configurations. Cylinder 4 is at the rear of the inline-4 engine. The engine control module monitors combustion events with precision.
Forced Induction Considerations
All S60 configurations use forced induction, creating higher combustion pressures than naturally aspirated engines. The T6 combines turbocharging with supercharging. Direct injection can contribute to carbon buildup on intake valves over time.
Diagnostic Approach
Identify your configuration and access the cylinder 4 ignition coil. Inspect spark plug condition. Check for boost leaks in the charge piping. Verify no vacuum leaks exist.
Resolution Process
Replace spark plugs with Volvo specifications. Test ignition coil output. Address any boost system issues. If carbon buildup is suspected, intake valve cleaning may be warranted.