Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HO2S2 POWER SUPPLY

Disconnect heated oxygen sensor 2 (HO2S2) harness connector.
Turn ignition switch ON.

Check the voltage between HO2S2 harness connector and ground.

DTC	+			-	Voltage
	HO2S2
	Bank	Connector	Terminal
P00D2	1	F62	1	Ground	Battery voltage
P00D4	2	F56	1

Is the inspection result normal?

YES

GO TO 3.

GO TO 2.

CHECK HO2S2 SENSOR 1 POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect IPDM E/R harness connector.
Check the continuity between HO2S2 harness connector and IPDM E/R harness connector.

DTC	HO2S2			IPDM E/R		Continuity
DTC	Bank	Connector	Terminal	Connector	Terminal	Continuity
P00D2	1	F62	1	F50	52	Existed
P00D4	2	F56	1	F50	53	Existed

Is the inspection result normal?

YES

Perform the trouble diagnosis for power supply circuit.

Repair or replace error-detected parts.

CHECK HO2S2 HEATER OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

Turn ignition switch OFF.
Disconnect ECM harness connector.

Check the continuity between HO2S2 harness connector and ECM harness connector.

DTC	HO2S2			ECM		Continuity
DTC	Bank	Connector	Terminal	Connector	Terminal	Continuity
P00D2	1	F62	2	F13	7	Existed
P00D4	2	F56	2	F13	47	Existed

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

GO TO 4.

Repair open circuit, short to ground or short to power in harness or connectors.

CHECK HEATED OXYGEN SENSOR 2 HEATER
Check heated oxygen sensor 2 heater. Refer to Component Inspection .

Is the inspection result normal?

YES

INSPECTION END

NO

Replace malfunctioning heated oxygen sensor 2. Refer to Removal and Installation (bank 2) , Removal and Installation (bank 1) .