I need to preface this by stating I fundamentally donat understand how an issue that directly results in the failure of inspection which dictates road safety/emissions quality and was identified by two mechanics as a part known to fail cannot be under a recall. The part addressed is #14001-3TA1E but more specifically it is an issue with the value position sensor. It is a small part which dicates whether the Swirl or tumble control activates which triggers the P2004. If you look up the code itas common side effects are as follows: Decrease in low-end engine torque: You may notice a decrease in acceleration, particularly at low RPM levels. Engine surging or sputtering: The engine may run unevenly, particularly when starting up. Sluggishness: The vehicle may feel less responsive to the throttle. Difficulty reaching higher speeds: You may find it challenging to accelerate quickly or reach your desired speed. Rough idle: The engine may run unevenly and potentially stall at low speeds or while idling. 2. Decreased Fuel Economy: The IMRC system’s primary function is to optimize the air/fuel mixture for different driving conditions. When it’s not functioning correctly due to being stuck open, it can negatively impact fuel efficiency. 3. Check Engine Light (CEL) Illumination: The Check Engine Light (or Service Engine Soon Light) will likely illuminate when the P2004 code is triggered. This is often the first indicator that something is wrong. 4. Potential for Severe Engine Damage: This is the most critical side effect. If the hardware for the IMRC butterfly valve plates becomes loose and falls into the engine, it can cause severe engine damage or even engine failure. This being said you would think it would be an easily replacable part. Not in the slightest you have to buy an entire manifold 1300 msrp through nissan with no gurantee of it fixing the light. I have had instances of stalling / sluggishness since it has come on. This seems imparitive to vehicle safety.