Nissan Rogue manuals

Nissan Rogue Service Manual: P0031, P0032 A/F sensor 1 heater

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition
P0031 A/F SEN1 HTR (B1) [Air fuel ratio (A/F) sensor 1 heater (bank 1)control circuit low] The current amperage in the A/F sensor 1 heater circuit is out of the normal range.

(An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater.)

P0032 A/F SEN1 HTR (B1) [Air fuel ratio (A/F) sensor 1 heater (bank 1)control circuit high] The current amperage in the A/F sensor 1 heater circuit is out of the normal range.

(An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater.)

POSSIBLE CAUSE

DTC P0031

DTC P0032

FAIL-SAFE

Not applicable

DTC 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 more than between 11 V at idle. >> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1.  Start engine and let it idle for at least 10 seconds.
  2.  Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-185, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT

  1.  Disconnect air fuel ratio (A/F) sensor 1 harness connector.
  2.  Turn ignition switch ON.
  3. Check the voltage between A/F sensor 1 harness connector and ground.

Check air fuel ratio (A/F) sensor 1 power supply circuit

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair or replace error-detected parts.

2.CHECK A/F SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT

  1.  Turn ignition switch OFF.
  2.  Disconnect ECM harness connector.
  3.  Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

Check A/F sensor 1 heater output signal circuit

  1. Also check harness for short to ground and 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 A/F SENSOR 1 HEATER Check the A/F sensor 1 heater. Refer to EC-186, "Component Inspection".

Is the inspection result normal? YES >> GO TO 5.

NO >> GO TO 4.

4.REPLACE AIR FUEL RATIO (A/F) SENSOR 1

Replace malfunctioning air fuel ratio (A/F) sensor 1. Refer to EM-29, "Exploded View".

CAUTION:

>> INSPECTION END

5.CHECK INTERMITTENT INCIDENT

Refer to GI-41, "Intermittent Incident".

>> INSPECTION END

Component Inspection

1.CHECK AIR FUEL RATIO (A/F) SENSOR 1

  1.  Turn ignition switch OFF.
  2.  Disconnect A/F sensor 1 harness connector.
  3.  Check resistance between A/F sensor 1 terminals as per the following.

Check air fuel ratio (A/F) sensor 1

Is the inspection result normal? YES >> INSPECTION END

NO >> GO TO 2.

2.REPLACE AIR FUEL RATIO (A/F) SENSOR 1

Replace air fuel ratio (A/F) sensor 1. Refer to EM-29, "Exploded View".

CAUTION:

>> INSPECTION END

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