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 ECM detected a read or write error internal to the ECM.

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P0607-00	Control Module Performance (Engine control module warning internal hardware failure - bad intelligent device or component)	1	Diagnosis condition	Ignition is ON or engine is running
			Signal (terminal)	-
			Threshold	The ECM stays powered on after the ignition is turned off
			Diagnosis delay time	Diagnostic runs continuously when the engine is running
		2	Diagnosis condition	Ignition is ON or engine is running
			Signal (terminal)	-
			Threshold	The monitoring microprocessor commands the torque actuator circuits (typically injector drivers) to shut down, but the torque actuator circuit feedbacks indicate the circuit is still active
			Diagnosis delay time	Diagnostic runs continuously when the engine is running
		3	Diagnosis condition	Ignition is ON or engine is running
			Signal (terminal)	-
			Threshold	The check sum of the ECM sub-processor memory does not equal the expected checksum or the independent internal watchdog timer updated in conjunction with the sub-processors intended instructions indicates operation processing is lost > 500 microseconds or the register value of the sub-processor is not equal to the expected value in normal operation
			Diagnosis delay time	Diagnostic runs continuously when the engine is running