The 2024 Volvo XC40 continues with turbocharged 4-cylinder engines for combustion models and fully electric powertrains for Recharge variants. A P0305 diagnostic trouble code indicating cylinder 5 misfire presents a diagnostic puzzle since combustion XC40 models only contain a four-cylinder engine.
The P0305 Code Contradiction
Standard OBD-II code P0305 indicates "Cylinder 5 Misfire Detected," but the XC40's 2.0-liter engine has cylinders numbered only 1 through 4. This code appearing suggests a diagnostic system anomaly requiring investigation.
2024 XC40 Powertrains
Combustion XC40 models use the B4 or B5 mild-hybrid turbocharged 4-cylinder engines. Electric Recharge models have no combustion engine. None include a fifth cylinder.
Investigating the Anomalous Code
Proper diagnosis requires Volvo VIDA diagnostics to analyze actual misfire counter data for each of the four physical cylinders.
Warranty Coverage
As a 2024 model, software-related diagnostic issues should be addressed under Volvo warranty.