A P0302 code on your 2022 Nissan Maxima indicates the engine control module has detected misfires in cylinder 2. The 2022 Maxima continues with the proven 3.5L VQ35DE V6 engine producing 300 horsepower. This mature powerplant has well-understood diagnostic characteristics that make misfire diagnosis straightforward.
Familiar Engine Platform
The VQ35DE has been refined over many years, providing reliable performance. Cylinder 2 is positioned on the rear bank of the 60-degree V6. Port fuel injection eliminates direct-injection carbon buildup concerns. The proven design means diagnostic techniques and common failure points are well-documented.
Typical Misfire Causes
Ignition coil failure remains the most common cause of cylinder-specific misfires on VQ35DE engines. Spark plug wear reduces ignition effectiveness over time. Fuel injector clogging or electrical failure affects fuel delivery. Vacuum leaks near cylinder 2 intake runner cause lean conditions. While less common on newer vehicles, these issues can occur even on 2022 models.
Identifying Symptoms
The smooth V6 becomes rough when cylinder 2 misfires. Idle quality suffers with noticeable vibration. Hesitation during acceleration, reduced fuel economy, and the check engine light are common indicators. The Maxima's sport sedan character is compromised when engine performance deteriorates.
Diagnostic Process
Comprehensive code scanning captures relevant data. Inspect spark plug and ignition coil on cylinder 2. Test fuel injector operation using appropriate methods. Check for vacuum leaks in the intake system. Compression testing verifies mechanical health. Given the vehicle's age, most components should be original and within service intervals.
Repair Options
Replace spark plugs with quality iridium units if due or fouled. Replace faulty ignition coils. Service fuel injectors if flow tests indicate problems. Repair any vacuum leaks discovered. With proper diagnosis, P0302 on the VQ35DE is typically straightforward to resolve.