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Nissan Sentra B18 (2020-2025) Service Manual: P00d2 Ho2s2 Heater

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P00D2

00

Heated O2 sensor heater B1 sensor 2

(HO2S heater control circuit range/performance bank 1 sensor 2)

Diagnosis condition

—

Signal (terminal)

Heated oxygen sensor 2 heater (bank 1) signal

Threshold

Deterioration in heated oxygen sensor 2 heater (bank 1) performance.

(Voltage signal transmitted from heated oxygen sensor 2 heater (bank 1) to ECM is higher/lower than voltage in the normal range.)

Diagnosis delay time

—

POSSIBLE CAUSE

  • Harness or connectors [The heated oxygen sensor 2 heater (bank 1) circuit is open or shorted.]

  • Heated oxygen sensor 2 heater (bank 1)

FAIL-SAFE

Not applicable

Confirmation Procedure

Confirmation Procedure

  1. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

    1. Turn ignition switch OFF and wait at least 10 seconds.

    2. Turn ignition switch ON.

    3. Turn ignition switch OFF and wait at least 10 seconds.

    TESTING CONDITION:

    Before performing the following procedure, confirm that battery voltage is between 11 V and 16 V at idle.

    >>

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE

    1. Start engine and warm it up to the normal operating temperature.

    2. Turn ignition switch OFF and wait at least 10 seconds.

    3. Turn ignition switch ON.

    4. Turn ignition switch OFF and wait at least 10 seconds.

    5. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.

    6. Let engine idle for 1 minute.

    7. Check 1st trip DTC.

    Is 1st tip DTC detected?

    YES >>

    Refer to DTC Diagnosis Procedure.

    NO-1 >>

    To check malfunction symptom before repair: Refer to Intermittent Incident.

    NO-2 >>

    Confirmation after repair: INSPECTION END

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK HEATED OXYGEN SENSOR 2 HEATER POWER SUPPLY CIRCUIT - 1

    1. Turn ignition switch OFF.

    2. Disconnect heated oxygen sensor 2 harness connector.

    3. Turn ignition switch ON.

    4. Check the voltage between heated oxygen sensor 2 harness connector and ground.

      +

      −

      Voltage

      Heated oxygen sensor 2

      Connector

      Terminal

      E72

      4

      Ground

      Battery voltage

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    GO TO 4.

  2. CHECK HEATED OXYGEN SENSOR 2 HEATER OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

    1. Turn ignition switch OFF.

    2. Disconnect ECM harness connector.

    3. Check the continuity between heated oxygen sensor 2 harness connector and ECM harness connector.

      Heated oxygen sensor 2

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E72

      3

      F25

      127

      Existed

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

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

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

  3. 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 Exploded View.

  4. CHECK HEATED OXYGEN SENSOR 2 HEATER POWER SUPPLY CIRCUIT - 2

    1. Turn ignition switch OFF.

    2. Disconnect IPDM E/R harness connector.

    3. Check the continuity between IPDM E/R harness connector and heated oxygen sensor 2 harness connector.

      IPDM E/R

      Heated oxygen sensor 2

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F96

      75

      E72

      4

      Existed

    4. Also check harness for short to ground.

    Is the inspection result normal?

    YES >>

    Perform the trouble diagnosis for power supply circuit.

    NO >>

    Repair or replace error-detected parts.

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