1.CHECK GROUND CONNECTION

1. Turn ignition switch OFF.
2. Check ground connection M95. Refer to Ground Inspection in Circuit Inspection.

Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair or replace ground connection.
2.CHECK HO2S2 POWER SUPPLY CIRCUIT

1. Disconnect heated oxygen sensor 2 (HO2S2) harness connector.
2. Turn ignition switch ON.
3. Check the voltage between heated oxygen sensor 2 harness connector and ground.

   DTC | HO2S2 | Ground | Voltage
   Bank | Connector | Terminal
   P0037, P0038 | 1 | F53 | 2 | Ground | Battery voltage
   P0057, P0058 | 2 | F52 | 2

Is the inspection result normal?
YES>>GO TO 4.
NO>>GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.

- Harness connectors F103, M116
- Harness connectors E106, M6
- IPDM E/R harness connector E7
- 15A fuse (No. 46)
- Harness for open or short between heated oxygen sensor 2 and fuse

>>Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between HO2S2 harness connector and ECM harness connector.

   DTC | HO2S2 | ECM | Continuity
   Bank | Connector | Terminal | Connector | Terminal
   P0037, P0038 | 1 | F53 | 3 | F102 | 55 | Existed
   P0057, P0058 | 2 | F52 | 3 | 56

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

Is the inspection result normal?
YES>>GO TO 5.
NO>>Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK HEATED OXYGEN SENSOR 2 HEATER
Refer to Component Inspection (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 7.
NO>>GO TO 6.
6.REPLACE HEATED OXYGEN SENSOR 2
Replace malfunctioning heated oxygen sensor 2.
■ CAUTION ■

- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (1.6 ft) onto a hard surface such as a concrete floor; use a new one.
- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant (commercial service tool).

>>INSPECTION END
7.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END