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Nissan Frontier. Manual - part 435

P0455 EVAP CONTROL SYSTEM

EC-311

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0455 EVAP CONTROL SYSTEM

On Board Diagnosis Logic

INFOID:0000000009480974

This diagnosis detects a very large leak (fuel filler cap fell off etc.) in EVAP system between the fuel tank and

EVAP canister purge volume control solenoid valve.

CAUTION:

• Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the

MIL may illuminate.

• If the fuel filler cap is not tightened properly, the MIL may illuminate.

• Use only a genuine NISSAN rubber tube as a replacement.

DTC Confirmation Procedure

INFOID:0000000009480975

CAUTION:

Never remove fuel filler cap during the DTC Confirmation Procedure.

NOTE:

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0455
0455

EVAP control system
gross leak detected

EVAP control system has a very large leak
such as fuel filler cap fell off, EVAP control sys-
tem does not operate properly.

• Fuel filler cap remains open or fails to

close.

• Incorrect fuel tank vacuum relief valve
• Incorrect fuel filler cap used
• Foreign matter caught in fuel filler cap.
• Leak is in line between intake manifold

and EVAP canister purge volume control
solenoid valve.

• Foreign matter caught in EVAP canister

vent control valve.

• EVAP canister or fuel tank leaks
• EVAP purge line (pipe and rubber tube)

leaks

• EVAP purge line rubber tube bent.
• Loose or disconnected rubber tube
• EVAP canister vent control valve and the

circuit

• EVAP canister purge volume control sole-

noid valve and the circuit

• Fuel tank temperature sensor
• O-ring of EVAP canister vent control valve

is missing or damaged.

• EVAP control system pressure sensor
• Refueling EVAP vapor cut valve
• ORVR system leaks

PBIB3640E

EC-312

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0455 EVAP CONTROL SYSTEM

• Make sure that EVAP hose are connected to EVAP canister purge volume control solenoid valve

properly.

• 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:

• Perform “DTC WORK SUPPORT” when the fuel level is between 1/4 and 3/4 full, and vehicle is placed

on flat level surface.

• Open engine hood before conducting the following procedure.

WITH CONSULT

1. Tighten fuel filler cap securely until reteaching sound is heard.

2. Turn ignition switch ON.

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

4. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT.

5. Make sure that the following conditions are met.

COOLAN TEMP/S: 0 - 70

°C (32 - 158°F)

INT/A TEMP SE: 0 - 60

°C (32 - 140°F)

6. Select “EVP V/S LEAK P0456/P1456” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode

with CONSULT.

Follow the instructions displayed.

NOTE:

If the engine speed cannot be maintained within the range displayed on the CONSULT screen, go to

EC-

117, "Basic Inspection"

7. Make sure that “OK” is displayed.

If “NG” is displayed, select “SELF-DIAG RESULTS” mode with CONSULT and make sure that “EVAP

GROSS LEAK [P0455]” is displayed. If it is displayed, refer to

EC-312, "Diagnosis Procedure"

If P0442 is displayed, perform Diagnostic Procedure for DTC P0442,

EC-276, "Diagnosis Procedure"

WITH GST

NOTE:

Be sure to read the explanation of

EC-127, "SRT Set Driving Pattern"

before driving vehicle.

1. Start engine.
2. Drive vehicle according to

EC-127, "SRT Set Driving Pattern"

3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Select SERVICE $07 with GST.
• If P0455 is displayed on the screen, go to

EC-312, "Diagnosis Procedure"

• If P0442 is displayed on the screen, go to

EC-276, "Diagnosis Procedure"

• If P0441 is displayed on the screen, go to

EC-271, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000009480976

CHECK FUEL FILLER CAP DESIGN

1. Turn ignition switch OFF.

2. Check for genuine NISSAN fuel filler cap design.
OK or NG

>> GO TO 2.

>> Replace with genuine NISSAN fuel filler cap.

CHECK FUEL FILLER CAP INSTALLATION

Check that the cap is tightened properly by rotating the cap clockwise.
OK or NG

SEF915U

P0455 EVAP CONTROL SYSTEM

EC-313

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

>> GO TO 3.

>> 1. Open fuel filler cap, then clean cap and fuel filler neck threads using air blower.

2. Retighten until ratcheting sound is heard.

CHECK FUEL FILLER CAP FUNCTION

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

>> GO TO 5.

>> GO TO 4.

CHECK FUEL TANK VACUUM RELIEF VALVE

Refer to

EC-316, "Component Inspection"

OK or NG

>> GO TO 5.

>> Replace fuel filler cap with a genuine one.

CHECK EVAP PURGE LINE

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

disconnection.

Refer to

EC-41

OK or NG

>> GO TO 6.

>> Repair or reconnect the hose.

CLEAN EVAP PURGE LINE

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

>> GO TO 7.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check the following.

• EVAP canister vent control is installed properly.

Refer to

FL-14, "Removal and Installation"

• EVAP canister vent control valve.

Refer to

EC-316, "Component Inspection"

OK or NG

>> GO TO 8.

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

INSTALL THE PRESSURE PUMP

To locate the EVAP leak, install EVAP service port adapter and pres-

sure pump to EVAP service port securely.

NOTE:

Improper installation of the EVAP service port adapter to the

EVAP service port may cause leaking.

BBIA0620E

EC-314

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0455 EVAP CONTROL SYSTEM

With CONSULT>>GO TO 9.

Without CONSULT>>GO TO 10.

CHECK FOR EVAP LEAK

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

, 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

EC-469, "How to Detect Fuel Vapor Leakage"

OK or NG

>> GO TO 11.

>> Repair or replace.

10.

CHECK FOR EVAP LEAK

Without CONSULT

1. Turn ignition switch OFF.

2. Apply 12 volts DC to EVAP canister vent control valve (1). The

valve will close. (Continue to apply 12 volts until the end of test.)

- EVAP control system pressure sensor (2)

- Drain filter (3)

- EVAP canister (4)
-

: Vehicle front

3. Pressurize the EVAP line using pressure pump with 1.3 to 2.7

kPa (0.013 to 0.028 kg/cm

, 0.19 to 0.39 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

, 0.6 psi) of pressure

in the system.

SEF916U

SEF200U

ALBIA0514ZZ

Content .. 433 434 435 436 ..