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 Engine Control Module (ECM) detected the EGR valve was unable to reach the commanded position.

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P046C-00	EGR_SENSOR (Exhaust Gas Recirculation Sensor "A" Circuit Range/Performance)	1	Diagnosis condition	Engine is running.
			Signal (terminal)	EGR position sensor (152)
			Threshold	Cumulative sum of error (commanded value - measured value) over a 30 second period is ever > 30, 000%, which is equivalent to (average of in range low error - tolerance) > 20%, where tolerance is defined as 0%
			Diagnosis delay time	Diagnostic runs continuously when the engine is running
		2	Diagnosis condition	Engine is running.
			Signal (terminal)	EGR position sensor (152)
			Threshold	(Maximum value of in range high error cumulative sum plus maximum value of in range low error cumulative sum within a 30 second period is ever > 40, 000%, which is equivalent to (average of in range high error - tolerance + average of in range low error - tolerance) > 26.667%, where in range high error is defined as (measured value - commanded value), In range low error is defined as (commanded value - measured value), and tolerance is defined as 0%
			Diagnosis delay time	Diagnostic runs continuously when the engine is running