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 crankshaft position sensor is a hall effect type sensor. The Engine Control Module (ECM) provides a 5V supply to the position sensor and a return circuit. As the teeth on the crankshaft speed ring move past the position sensor, a signal is generated on the position sensor signal circuit. The ECM interprets this signal and converts it to an engine speed. A missing tooth on the crankshaft gear is used by the ECM to determine the position of the engine.