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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 307 (Engine Control System (DTC/Circuit Diagnosis) (4.0L) (1 Of 4)) >> DTC/Circuit Diagnosis >> DTC P00D2: Ho2S2 Heater >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HEATED OXYGEN SENSOR 2 (HO2S2) POWER SUPPLY CIRCUIT 
    1. Disconnect heated oxygen sensor 2 (HO2S2) harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between HO2S2 harness connector and ground.

      DTC

      HO2S2

      Ground

      Voltage

      Bank

      Connector

      Terminal

      P00D2

      1

      F13

      3

      Ground

      Battery voltage

    Is the inspection result normal?

    YES

    GO TO 3 .

    NO

    GO TO 2 .

  2. DETECT MALFUNCTIONING PART 

    Check the following.

    • 15 A fuse (No. 54)
    • Harness for open or short between heated oxygen sensor 2 and fuse
    • Loose or poor connection for each connector and harness

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

  3. 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

      P00D2

      1

      F13

      2

      F54

      37

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

    Is the inspection result normal?

    YES

    GO TO 4 .

    NO

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

  4. CHECK HO2S2 HEATER 

    Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 6 .

    NO

    GO TO 5 .

  5. REPLACE HEATED OXYGEN SENSOR 2 

    Replace malfunctioning heated oxygen sensor 2. Refer to Removal and Installation .

    CAUTION:
    • Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) 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

  6. CHECK INTERMITTENT INCIDENT 

    Refer to Intermittent Incident .

    INSPECTION END

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