DTC DETECTION LOGIC 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.

DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause
P0455 | EVAP control system gross leak detected | EVAP control system has a very large leak such as fuel filler cap fell off, EVAP control system 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 solenoid 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

■ 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
1.PRECONDITIONING
■ CAUTION ■
Never remove fuel filler cap during the DTC Confirmation Procedure.
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.

NOTE：
Check that EVAP hoses are connected to EVAP canister purge volume control solenoid valve properly.
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 procedures.

Do you have CONSULT-III?
YES>>GO TO 2.
NO>>GO TO 4.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III

1. Tighten fuel filler cap securely until ratcheting 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-III.
5. Check 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 SML LEAK P0442/P1442” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-III.Follow the instructions displayed.
   NOTE：
   If the engine speed cannot be maintained within the range displayed on the CONSULT-III screen, go to Special Repair Requirement (GT-R certified NISSAN dealer).

Which is displayed on CONSULT-III screen?
OK>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
NG>>GO TO 3.
3.CHECK DTC
Check DTC.
Which DTC is detected?
P0455>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
P0442>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
4.PERFORM DTC CONFIRMATION PROCEDURE
With GST
NOTE：
Be sure to read the explanation of Driving Pattern in SRT Set Driving Pattern (GT-R certified NISSAN dealer) before driving vehicle.

1. Start engine.
2. Drive vehicle according to SRT Set Driving Pattern (GT-R certified NISSAN dealer).
3. Stop vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Check 1st trip DTC.

Is 1st trip DTC detected?
YES-1>>P0455: Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
YES-2>>P0442: Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
YES-3>>P0441: Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
NO>>INSPECTION END