When a P0306 diagnostic trouble code appears on a 2024 Lexus NX, this represents an impossible condition that requires investigation. The code indicates a cylinder 6 misfire, but your NX does not have a cylinder 6.
2024 Lexus NX Engine Configuration
The 2024 Lexus NX lineup exclusively uses 4-cylinder engines:
- NX 250: 2.5L 4-cylinder (203 hp)
- NX 350: 2.4L turbocharged 4-cylinder (275 hp)
- NX 350h: 2.5L 4-cylinder hybrid (240 hp combined)
- NX 450h+: 2.5L 4-cylinder plug-in hybrid (304 hp combined)
A 4-cylinder engine contains only cylinders 1, 2, 3, and 4. Cylinder 6 does not physically exist in any NX configuration, making P0306 technically impossible.
What Could Cause This Reading
- Diagnostic Tool Error: Scanner malfunction or miscommunication with vehicle
- Incorrect Vehicle Selection: Scanner may be configured for a different model
- Software Anomaly: ECU corruption or incorrect calibration data
- Model Confusion: May have been confused with Lexus RX (which has V6 options)
Proper Diagnostic Steps
First verify the scanner is correctly identifying your vehicle. If your NX is experiencing actual running problems, look for codes P0301-P0304 which are valid for 4-cylinder misfire detection.