Nissan Murano: Dtc/circuit Diagnosis / P0131 A/f Sensor 1

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / Dtc/circuit Diagnosis / P0131 A/f Sensor 1

DTC Description

DTC DETECTION LOGIC

To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal is not inordinately low.

The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0 V.

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0131

A/F SENSOR1 (B1)

(O2 sensor circuit low voltage bank 1 sensor 1) 		Diagnosis condition —
Signal (terminal) The A/F signal computed by ECM
Threshold The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0 V
Diagnosis delay time —
P0151

A/F SENSOR1 (B2)

(O2 sensor circuit high voltage bank 2 sensor 1) 		Diagnosis condition —
Signal (terminal) The A/F signal computed by ECM
Threshold The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0 V
Diagnosis delay time —

POSSIBLE CAUSE

P0131

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

  • A/F sensor 1

P0151

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

  • A/F sensor 1

FAIL-SAFE

Not applicable

DTC Confirmation Procedure

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following 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 10.5 V at idle.

>>

GO TO 2.

CHECK A/F SENSOR 1 FUNCTION

With CONSULT

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

  2. Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT.

  3. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication.

With GST

Follow the procedure “With CONSULT” above.

Is the indication constantly approx. 0 V?

YES>>

Proceed to Diagnosis Procedure.

NO>>

GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

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

  2. Turn ignition switch ON.

  3. Turn ignition switch OFF, wait at least 10 seconds and then restart engine.

  4. Drive and accelerate Nissan Murano vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine.

    CAUTION:

    Always drive Nissan Murano vehicle at a safe speed.

  5. Maintain the following conditions for approximately 20 consecutive seconds.

    ENG SPEED 1,000 - 3,200 rpm
    VHCL SPEED SE More than 40 km/h (25 mph)
    B/FUEL SCHDL 1.5 - 9.0 msec
    Selector lever Suitable position

    NOTE:

    • Keep the accelerator pedal as steady as possible during cruising.

    • If this procedure is not completed within 1 minute after restarting engine at step 1, return to step 1.

  6. Check 1st trip DTC.

With GST

Follow the procedure “With CONSULT” above.

Is 1st trip DTC detected?

YES>>

Proceed to Diagnosis Procedure.

NO>>

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

NO>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

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

  1. Disconnect A/F sensor 1 harness connector.

  2. Turn ignition switch ON.

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

    DTC A/F sensor 1 Ground Voltage
    Bank Connector Terminal
    P0131 1 F12 1 Ground Battery voltage
    P0151 2 F61 1

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK AIR FUEL RATIO (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.

DTC A/F sensor 1 IPDM E/R Continuity
Bank Connector Terminal Connector Terminal
P0131 1 F12 1 F19 52 Existed
P0151 2 F61 1 53

Is the inspection result normal?

YES>>

Perform the trouble diagnosis for power supply circuit.

NO>>

Repair or replace error-detected parts.

CHECK A/F SENSOR 1 INPUT 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 .

    DTC A/F sensor 1 ECM Continuity
    Bank Connector Terminal Connector Terminal
    P0131 1 F12 3 F79 66 Existed
    4 67
    P0151 2 F61 3 76
    4 77

  4. Check the continuity between A/F sensor 1 harness connector and ground, or ECM harness connector and ground.

    DTC A/F sensor 1 Ground Continuity
    Bank Connector Terminal
    P0131 1 F12 3 Ground Not existed
    4
    P0151 2 F61 3
    4
    DTC ECM Ground Continuity
    Connector Terminal
    P0131 F79 66 Ground Not existed
    67
    P0151 76
    77

  5. Also check harness for short to power.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

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

    P0130 A/f Sensor 1

    DTC Description DTC DETECTION LOGICTo judge malfunctions, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal fluctuates according to fuel feedback control...

    P0136 Ho2s2

    DTC Description DTC DETECTION LOGICThe heated oxygen sensor 2 has a much longer switching time between rich and lean than the air fuel ratio (A/F) sensor 1...

    Other information:

    Nissan Murano (Z52) 2015-2024 Service Manual: U1300 Av Comm Circuit


    DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition U1300–01 AV communication circuit (AV communication circuit) Diagnosis condition When ignition switch is ON. Signal (terminal) — Threshold — Diagnosis delay time — POSSIBLE CAUSE AV communication circuit AV control unit Combination meter FAIL-SAFEAV communication is inoperative DTC Confirmation Procedure PERFORM DTC CONFIRMATION PROCEDURE CONSULT Ignition switch ON...

    Nissan Murano (Z52) 2015-2024 Service Manual: Abbreviations


    Abbreviation List The following ABBREVIATIONS are used:A ABBREVIATION DESCRIPTION A/C Air conditioner Air conditioning A/F sensor Air fuel ratio sensor A/T Automatic transaxle/transmission ABS Anti-lock braking system ACCS Advance climate control system ACL Air cleaner AEB Automatic Emergency Braking AP Accelerator pedal APP Accelerator pedal position ATF Automatic transmission fluid ATR Active torque rod AV Audio visual AVM Around view monitor AWD All wheel drive B ABBREVIATION DESCRIPTION BARO Barometric pressure BCI Backup collision intervention BCM Body control module BLSD Brake limited slip differential BPP Brake pedal position BSI Blind spot intervention BSW Blind spot warning C ABBREVIATION DESCRIPTION CGW Can Gateway CKP Crankshaft position CL Closed loop CMP Camshaft position CPP Clutch pedal position CTP Closed throttle position CVT Continuously variable transaxle/transmission D ABBREVIATION DESCRIPTION D1 Drive range first gear D2 Drive range second gear D3 Drive range third gear D4 Drive range fourth gear DCA Distance control assist DDS Downhill drive support DFI Direct fuel injection system DLC Data link connector DTC Diagnostic trouble code E ABBREVIATION DESCRIPTION E/T Exhaust temperature EBD Electric brake force distribution EC Engine control ECD Electronic controlled deceleration ECL Engine coolant level ECM Engine control module ECT Engine coolant temperature ECV Electrical control valve EEPROM Electrically erasable programmable read only memory EFT Engine fuel temperature EGR Exhaust gas recirculation EGRT Exhaust gas recirculation temperature EGT Exhaust gas temperature ELD Electronic locking differential EOP Engine oil pressure EP Exhaust pressure EPR Exhaust pressure regulator EPS Electronically controlled power steering Electronic power steering ESP Electronic stability program system EVAP canister Evaporative emission canister EVSE Electric Nissan Murano vehicle supply equipment EXC Exhaust control F ABBREVIATION DESCRIPTION FC Fan control FCW Forward collision warning FEB Forward Emergency Braking FIC Fuel injector control FP Fuel pump FR Front FRP Fuel rail pressure FRT Fuel rail temperature FTP Fuel tank pressure FTT Fuel tank temperature G ABBREVIATION DESCRIPTION GND Ground GPS Global positioning system GST Generic scan tool H ABBREVIATION DESCRIPTION HBMC Hydraulic body-motion control system HDD Hard disk drive HO2S Heated oxygen sensor HOC Heated oxidation catalyst HPCM Hybrid powertrain control module I ABBREVIATION DESCRIPTION I/M Inspection and maintenance IA Intake air IAC Idle air control IAT Intake air temperature IBA Intelligent brake assist IC Ignition control ICC Intelligent cruise control ICM Ignition control module IPDM E/R Intelligent power distribution module engine room ISC Idle speed control ISS Input shaft speed ITS Information technology suite IVC In-Nissan Murano vehicle communications K ABBREVIATION DESCRIPTION KS Knock sensor L ABBREVIATION DESCRIPTION LBC Li-ion battery controller LCD Liquid crystal display LCU Local control unit LDP Lane departure prevention LDW Lane departure warning LED Light emitting diode LH Left-hand LHD Left-hand drive LIN Local interconnect network M ABBREVIATION DESCRIPTION M/T Manual transaxle/transmission MAF Mass airflow MAP Manifold absolute pressure MDU Multi display unit MI Malfunction indicator MIL Malfunction indicator lamp MOD Moving object detection N ABBREVIATION DESCRIPTION NOX Nitrogen oxides O ABBREVIATION DESCRIPTION O2 Oxygen O2S Oxygen sensor OBD On board diagnostic OC Oxidation catalytic converter OD Overdrive OL Open loop OSS Output shaft speed P ABBREVIATION DESCRIPTION P/S Power steering PBR Potentio balance resistor PCV Positive crankcase ventilation PFCW Predictive forward collision warning PNP Park/Neutral position PSP Power steering pressure PTC Positive temperature coefficient PTO Power takeoff PWM Pulse width modulation R ABBREVIATION DESCRIPTION RAM Random access memory RAS Rear active steer RH Right-hand RHD Right-hand drive ROM Read only memory RPM Engine speed RR Rear S ABBREVIATION DESCRIPTION SAE Society of Automotive Engineers, Inc...

    Categories

    Autolight system

    Nissan Murano. Autolight system

    The autolight system allows the headlights to turn on and off automatically. The autolight system can:

    Turn on the headlights, front parking, tail, license plate and instrument panel lights automatically when it is dark. Turn off all the lights (except daylight running lights) when it is light. Keep all the lights on for a period of time after you place the ignition switch in the OFF position and all doors are closed.

    read more

     
    Copyright © 2026 www.nimurano.com