Nissan Rogue (T33) 2021-Present Service Manual: P0030 A/f Sensor 1 Heater

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / P0030 A/f Sensor 1 Heater

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0030 00

HO2S1 HTR (B1)

(HO2S heater control circuit bank 1 sensor 1) 		Diagnosis condition Engine running at idle
Signal (terminal) A/F sensor 1 heater signal
Threshold Voltage signal transmitted from A/F sensor 1 heater to ECM is higher/lower than voltage in the normal range
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors (The A/F sensor 1 heater circuit is open or shorted.)

  • The A/F sensor 1 heater

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Start the engine and let it idle for at least 10 seconds.

  2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES>>

Proceed 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

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

  1. Turn ignition switch OFF.

  2. Disconnect air fuel ratio (A/F) sensor 1 harness connector.

  3. Turn ignition switch ON.

  4. Check the voltage between A/F sensor 1 harness connector and ground.

    + − Voltage
    A/F sensor 1
    Connector Terminal
    F18 4 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect IPDM E/R harness connector.

  3. Check the continuity between A/F sensor 1 harness connector and IPDM E/R harness connector.

    A/F sensor 1 IPDM E/R Continuity
    Connector Terminal Connector Terminal
    F18 4 F35 75 Existed

Is the inspection result normal?

YES>>

Perform the trouble diagnosis for power supply circuit.

NO>>

Repair or replace malfunctioning part.

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.

    A/F sensor 1 ECM Continuity
    Connector Terminal Connector Terminal
    F18 3 F72 6 Existed

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

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace malfunctioning part.

CHECK A/F SENSOR 1 HEATER

Refer to Component Inspection.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

GO TO 5.

REPLACE A/F SENSOR 1

Replace A/F sensor 1. Refer to Removal and Installation.

CAUTION:

  • Discard any A/F 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 A/F sensor, clean exhaust system threads.

>>

INSPECTION END

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