p2000mCode Fault Location Probable Cause; P2000: Nitrogen oxides (NOx) trap, bank 1 - efficiency below threshold (Buy Part On Amazon): NOx trapH&K P2000SK Subcompact V2 LEM 9mm Luger 3.26in Black Pistol - 10+1 Rounds. Like the slhtly larger P2000 model, the P2000 SK (subcompact) combines elements of the successful HK USP Compact pistol with recent