Diagnostic trouble code P0306 on your 2022 Mazda CX-9 indicates a cylinder 6 misfire detection, creating an immediate diagnostic contradiction. Despite being Mazda's three-row SUV, the CX-9 is powered by a four-cylinder turbocharged engine, meaning there is no sixth cylinder to experience a misfire.
2022 CX-9 Engine Configuration
The 2022 Mazda CX-9 uses the Skyactiv-G 2.5-liter turbocharged four-cylinder engine producing up to 250 horsepower. Despite the CX-9's larger size, Mazda chose a turbocharged four-cylinder rather than a V6 for efficiency. The engine has only four cylinders numbered 1-4.
Code Investigation
Since the CX-9 lacks cylinder 6, P0306 represents diagnostic system malfunction. Possible causes include scanner errors, ECM software issues, or aftermarket device interference.
Diagnostic Approach
Verify with Mazda IDS diagnostics. Remove OBD-II accessories. If symptoms exist, diagnose cylinders 1-4.