DTC Detection Logic

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 DEF quality sensor has measured the concentration of DEF in the tank to be:

Below the minimum concentration threshold.
Above the maximum concentration threshold.
Sensor is unable to generate a concentration estimate for longer than the maximum wait time threshold

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P207F-00	DEF QLTY SENS	Diagnosis condition	Ignition switch ON or the engine is running.
		Signal (terminal)	DEF quality sensor signal.
		Threshold	DEF tank concentration detection element signal is out of range, shorted low or shorted high for 5 seconds. DEF concentration level > 40%. 22.5%< DEF concentration level < 15%. DEF concentration level cannot be detected (frozen or not present).
		Diagnosis delay time	-