DTC Description: Notes
WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
The Engine Control Module (ECM) can detect when inaccurate fuel injection occurs by monitoring fuel rail pressure and engine speed. During certain engine conditions, the ECM looks at injection on time and engine speed to determine if the injector is meeting the proper fuel quantity. If the fuel quantity is outside the set limits, a fault will be set.