P0455
ON BOARD DIAGNOSIS LOGIC
NOTE: If DTC P0455 is displayed with P1448, perform trouble diagnosis for DTC P1448 first.
This diagnosis detects a very large leak (fuel filler cap fell off etc.) in the EVAP system between the fuel tank and the EVAP canister purge volume control solenoid valve.
Malfunction is detected when EVAP control system has a very large leak, such as fuel filler cap fell off, EVAP control system does not operate properly.
CAUTION:
- Fuel filler cap remains open or fails to close.
- Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.
- Use only a genuine NISSAN rubber tube as a replacement.
POSSIBLE CAUSE
- 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.
- Blocked or bent rubber tube to EVAP control system pressure sensor
- Loose or disconnected rubber tube
- EVAP canister vent control valve and the circuit
- EVAP canister purge volume control solenoid valve and the circuit
- Absolute pressure sensor
- Fuel tank temperature sensor
- O-ring of EVAP canister vent control valve is missing or damaged.
- EVAP control system pressure sensor
- Refueling control valve
- ORVR system leaks
DTC CONFIRMATION PROCEDURE
CAUTION: Never remove fuel filter cap during the DTC confirmation procedure.
NOTE:
- If DTC P0455 is displayed with P1448, perform trouble diagnosis for DTC P1448 first.
- Make sure that EVAP hoses 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 5 seconds before conducting the next test.
TESTING CONDITION:
- Perform "DTC WORK SUPPORT" when the fuel level is between 1/4 to 3/4 full and vehicle is placed on flat level surface.
- Open engine hood before conducting the following procedure.
With CONSULT-II
1. Tighten fuel filter cap securely until ratcheting sound is heard.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 5 seconds.
4. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
5. Make sure that the following conditions are met.
COOLAN TEMP/S: 0 - 32 °C (32 - 90 °F)
INT/A TEMP SE: More than 0 °C (32 °F)
6. Select "EVAP SML LEAK P0440" of "EVAPORATIVE SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT-II. Follow the instruction displayed.
NOTE: If the engine speed cannot be maintained within the range displayed on the CONSULT-II screen, go to "Basic Inspection".
7. Make sure that "OK" is displayed.
If "NG" is displayed, select "SELF-DIAG RESULTS" mode with CONSULT-II and make sure that "EVAP GROSS LEAK [P0455] is displayed, refer to "Diagnostic Procedure" below.
If P0440 is displayed, perform "Diagnostic Procedure" for DTC P0440.
With GST
NOTE: Be sure to read the explanation of "Driving Pattern" before driving vehicle.
1. Start engine.
2. Drive vehicle according to "Driving Pattern".
3. Stop vehicle.
4. Select "MODE 1" with GST.
- If SRT of EVAP system is not set yet, go to the following step.
- If SRT of EVAP system is set, the result will be OK.
5. Turn ignition switch "OFF" and wait at least 5 seconds.
6. Start engine.
It is not necessary to cool engine down before driving.
7. Drive vehicle again according to the "Driving Pattern".
8. Stop vehicle.
9. Select "MODE 3" with GST.
- If P0455 is displayed on the screen, go to "Diagnostic Procedure" below.
- If P0440 is displayed on the screen, go to "Diagnostic Procedure" below.
- If P1447 is displayed on the screen, go to "Diagnostic Procedure" for "DTC P1447".
- If P0440, P0455 and P1447 are not displayed on the screen, go to the following step.
10. Select "MODE 1" with GST.
- If SRT of EVAP system is set, the result will be OK.
- If SRT of EVAP system is not set, go to step 6.
Diagnostic Procedure
Steps 1 - 3:
Steps 4 - 7:
Step 8:
Step 9:
Step 10:
Steps 11 - 13:
Step 14:
Steps 15 - 16:
Step 17:
Step 18:
Step 19:
