If your 2023 Kia Soul is displaying a P0305 code indicating a cylinder 5 misfire, this code requires diagnostic investigation. The 2023 Soul uses only a four-cylinder engine: the 2.0L naturally aspirated I-4. With only four cylinders numbered 1-4, P0305 is technically anomalous.
2023 Soul Powertrain
The third-generation 2023 Soul uses the 2.0L Nu I-4 producing 147 horsepower. This is the only engine available across all Soul trims (the turbocharged option was discontinued). The Soul has never offered a V6 engine.
Why P0305 Cannot Be Valid
The Soul's 2.0L engine has exactly four cylinders. A P0305 code references a non-existent cylinder 5, indicating a diagnostic error rather than an actual misfire.
Possible Causes
ECM software issues can store invalid codes. Scan tool communication errors may misread data. Low 12-volt battery voltage affects computer reliability. Aftermarket diagnostic tools may have compatibility issues with Kia systems.
Diagnostic Recommendations
Use a Kia-compatible scan tool to verify codes. Test battery condition. If actual misfire symptoms exist (rough running, hesitation), focus on cylinders 1-4. Clear the erroneous code and monitor.