The 2022 Volvo XC60 is powered exclusively by turbocharged 4-cylinder engines across all variants including B5, B6, and Recharge plug-in hybrid. When a P0305 diagnostic trouble code appears indicating a cylinder 5 misfire, this represents an anomalous diagnostic situation since all XC60 engines have only four cylinders.
Understanding the P0305 Anomaly
The P0305 code translates to "Cylinder 5 Misfire Detected" in standard OBD-II terminology. However, the XC60's 2.0-liter 4-cylinder engine contains only cylinders numbered 1 through 4. The appearance of this code indicates a diagnostic system irregularity.
Volvo's 4-Cylinder Platform
Since its redesign, the XC60 has exclusively used 4-cylinder engines enhanced by turbocharging, supercharging, and/or electric motors. No current XC60 has more than four combustion chambers.
Diagnostic Protocol
When encountering P0305 on your 4-cylinder XC60, a qualified technician should use Volvo VIDA diagnostics to verify actual misfire counter data for cylinders 1-4. Software updates and communication errors should be investigated.
Possible Causes
This anomalous code may result from ECU software requiring updates, control module communication errors, or aftermarket device interference.