DTC Detection Logic

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD and 2019 Nissan NV2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P0030	A/F SEN1 HTR (B1) [A/F sensor 1 heater (bank 1) performance]	Diagnosis condition	Start engine and let it idle
		Signal (terminal)	A/F sensor 1 heater signal
		Threshold	Voltage signal transmitted from A/F sensor 1 heater to ECM is higher/lower than voltage in the normal range
		Diagnosis delay time	--
P0031	A/F SEN1 HTR (B1) [A/F sensor 1 heater (bank 1) control circuit low]	Diagnosis condition	Start engine and let it idle
		Signal (terminal)	A/F sensor 1 heater signal
		Threshold	An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater
		Diagnosis delay time	--
P0032	A/F SEN1 HTR (B1) [A/F sensor 1 heater (bank 1) control circuit high]	Diagnosis condition	Start engine and let it idle
		Signal (terminal)	A/F sensor 1 heater signal
		Threshold	An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater
		Diagnosis delay time	--
P0050	A/F SEN1 HTR (B2) [A/F sensor 1 heater (bank 2) performance]	Diagnosis condition	Start engine and let it idle
		Signal (terminal)	A/F sensor 1 heater signal
		Threshold	Voltage signal transmitted from A/F sensor 1 heater to ECM is higher/lower than voltage in the normal range
		Diagnosis delay time	--
P0051	A/F SEN1 HTR (B2) [A/F sensor 1 heater (bank 2) control circuit low]	Diagnosis condition	Start engine and let it idle
		Signal (terminal)	A/F sensor 1 heater signal
		Threshold	An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater
		Diagnosis delay time	--
P0052	A/F SEN1 HTR (B2) [A/F sensor 1 heater (bank 2) control circuit high]	Diagnosis condition	Start engine and let it idle
		Signal (terminal)	A/F sensor 1 heater signal
		Threshold	An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater
		Diagnosis delay time	--