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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 476 (Engine Control System (DTC/Circuit Diagnosis) (3 Of 3)) >> DTC/Circuit Diagnosis >> DTC P0455: EVAP Control System >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUEL FILLER CAP DESIGN 
    1. Turn ignition switch OFF.
    2. Check for genuine NISSAN fuel filler cap design.
      G04074945Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG

    OK

    GO TO 2.

    NG

    Replace with genuine NISSAN fuel filler cap.

  2. CHECK FUEL FILLER CAP INSTALLATION 

    Check that the cap is tightened properly by rotating the cap clockwise.

    OK or NG

    OK

    GO TO 3.

    NG

    1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.
    2. Retighten until ratcheting sound is heard.
  3. CHECK FUEL FILLER CAP FUNCTION 

    Check for air releasing sound while opening the fuel filler cap.

    OK or NG

    OK

    GO TO 5.

    NG

    GO TO 4.

  4. CHECK FUEL TANK VACUUM RELIEF VALVE 

    Refer to System Description .

    OK or NG

    OK

    GO TO 5.

    NG

    Replace fuel filler cap with a genuine one.

  5. CHECK EVAP PURGE LINE 

    Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks, improper connection or disconnection.

    Refer to System Description .

    OK or NG

    OK

    GO TO 6.

    NG

    Repair or reconnect the hose.

  6. CLEAN EVAP PURGE LINE 

    Clean EVAP purge line (pipe and rubber tube) using air blower.

    GO TO 7.

  7. CHECK EVAP CANISTER VENT CONTROL VALVE 

    Check the following.

    OK or NG

    OK

    GO TO 8.

    NG

    Repair or replace EVAP canister vent control valve and O-ring.

  8. INSTALL THE PRESSURE PUMP 

    To locate the EVAP leak, install EVAP service port adapter and pressure pump to EVAP service port securely.

    NOTE: Improper installation of the EVAP service port adapter to the EVAP service port may cause leaking.
    G04074947Courtesy of NISSAN NORTH AMERICA, INC.

    With CONSULT

    GO TO 9.

    Without CONSULT

    GO TO 10.

  9. CHECK FOR EVAP LEAK 

    SYMBOL With CONSULT

    1. Turn ignition switch ON.
    2. Select "EVAP SYSTEM CLOSE" of "WORK SUPPORT" mode with CONSULT.
    3. Touch "START" and apply pressure into the EVAP line until the pressure indicator reaches the middle of the bar graph.
      CAUTION:
      • Never use compressed air or a high pressure pump.
      • Never exceed 4.12 kPa (0.042 kg/cm 2 , 0.6 psi) of pressure in the system.
    4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details.
      G04080319Courtesy of NISSAN NORTH AMERICA, INC.

      Refer to System Description .

    OK or NG

    OK

    GO TO 11.

    NG

    Repair or replace.

  10. CHECK FOR EVAP LEAK 

    SYMBOL Without CONSULT

    1. Turn ignition switch OFF.
    2. Apply 12 volts DC to EVAP canister vent control valve. The valve will close. (Continue to apply 12 volts until the end of test.)

      Refer to EVAP Canister Vent Control Valve .

    3. Pressurize the EVAP line using pressure pump with 1.38 to 2.76 kPa (0.014 to 0.028 kg/cm 2 , 0.2 to 0.4 psi), then remove pump and EVAP service port adapter.
      CAUTION:
      • Never use compressed air or a high pressure pump.
      • Never exceed 4.12 kPa (0.042 kg/cm 2 , 0.6 psi) of pressure in the system.
    4. Using EVAP leak detector, locate the EVAP leak. For the leak detector, refer to the instruction manual for more details. Refer to System Description .
      G04080319Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG

    OK

    GO TO 12.

    NG

    Repair or replace.

  11. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION 

    SYMBOL With CONSULT

    1. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port.
    2. Start engine.
    3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode.
    4. Touch "Qu" on CONSULT screen to increase "PURG VOL CONT/V" opening to 100%.
    5. Check vacuum hose for vacuum when revving engine up to 2, 000 rpm.

    OK or NG

    OK

    GO TO 14.

    NG

    GO TO 13.

  12. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION 

    SYMBOL Without CONSULT

    1. Start engine and warm it up to normal operating temperature.
    2. Stop engine.
    3. Disconnect vacuum hose to EVAP canister purge volume control solenoid valve at EVAP service port.
    4. Start engine and let it idle for at least 80 seconds.
    5. Check vacuum hose for vacuum when revving engine up to 2, 000 rpm.

      Vacuum should exist.

    OK or NG

    OK

    GO TO 15.

    NG

    GO TO 13.

  13. CHECK VACUUM HOSE 

    Check vacuum hoses for clogging or disconnection. Refer to System Description .

    OK or NG

    OK (With CONSULT)

    GO TO 14.

    OK (Without CONSULT)

    GO TO 15.

    NG

    Repair or reconnect the hose.

  14. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE 

    SYMBOL With CONSULT

    1. Start engine.
    2. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT. Check that engine speed varies according to the valve opening.

    OK or NG

    OK

    GO TO 16.

    NG

    GO TO 15.

  15. CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE 

    Refer to DTC Description .

    OK or NG

    OK

    GO TO 16.

    NG

    Replace EVAP canister purge volume control solenoid valve. Refer to Exploded View .

  16. CHECK FUEL TANK TEMPERATURE SENSOR 

    Refer to Component Inspection .

    OK or NG

    OK

    GO TO 17.

    NG

    Replace fuel level sensor unit. Refer to Removal and Installation - VQ40DE .

  17. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR 

    Refer to Component Inspection .

    OK or NG

    OK

    GO TO 18.

    NG

    Replace EVAP control system pressure sensor. Refer to Removal and Installation .

  18. CHECK EVAP/ORVR LINE 

    Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kink, looseness and improper connection. For location, refer to Component Parts Location .

    OK or NG

    OK

    GO TO 19.

    NG

    Repair or replace hoses and tubes.

  19. CHECK RECIRCULATION LINE 

    Check recirculation line between filler neck tube and fuel tank for clogging, kink, cracks, looseness and improper connection.

    OK or NG

    OK

    GO TO 20.

    NG

    Repair or replace hose, tube or filler neck tube. Refer to Removal and Installation - VQ40DE .

  20. CHECK REFUELING EVAP VAPOR CUT VALVE 

    Refer to Component Inspection (Refueling EVAP vapor cut valve) .

    OK or NG

    OK

    GO TO 21.

    NG

    Replace refueling EVAP vapor cut valve with fuel tank. Refer to Removal and Installation - VQ40DE .

  21. CHECK INTERMITTENT INCIDENT 

    Refer to Intermittent Incident .

    INSPECTION END

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