If your 2022 Subaru Crosstrek is displaying a P0305 code indicating a cylinder 5 misfire, this code requires diagnostic investigation. The 2022 Crosstrek offered only four-cylinder engines: the 2.0L flat-four and the 2.5L flat-four. With only four cylinders, P0305 is technically anomalous.
2022 Crosstrek Powertrain
The second-generation 2022 Crosstrek offered the 2.0L FB20 flat-four (152 hp) on base models and the 2.5L FB25 flat-four (182 hp) on Premium, Sport, and Limited trims. Both are boxer-configuration four-cylinder engines with cylinders numbered 1-4.
Understanding the Anomalous Code
Since the 2022 Crosstrek has exactly four cylinders regardless of engine option, a P0305 code cannot represent an actual cylinder 5 misfire. This is an erroneous diagnostic code.
Possible Causes
ECM software issues can store invalid codes. Scan tool communication errors may misread data. Low battery voltage affects ECM reliability. Aftermarket diagnostic tools may have compatibility issues.
Diagnostic Steps
Use a Subaru-compatible scan tool to verify codes. Test battery condition. If actual misfire symptoms exist, diagnose cylinders 1-4. Clear the erroneous code and monitor.