Nissan Frontier lack of power and inability to accelerate, possible downstream O2 sensor issue and misfire code P0305 on Nissan Frontier

Some Nissan Frontier owners report experiencing a lack of power and an inability to accelerate, which may be attributed to issues such as a faulty downstream O2 sensor or a misfire code P0305. These problems can manifest as slow acceleration, high fuel consumption, foul odors from the exhaust, and the illumination of the check engine light due to a malfunctioning O2 sensor. Additionally, the misfire code P0305 indicates a specific cylinder misfire that can further hinder performance, often stemming from ignition system problems like faulty spark plugs or a malfunctioning ignition coil. It is crucial for owners to address these issues promptly through proper diagnosis and repair, ideally consulting with a qualified mechanic to restore their vehicle's performance.