2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 535
See: P Code Charts/P0456.
Is the inspection result normal?
YES - GO TO 5.
NO - Replace fuel filler cap with a genuine one.
5.CHECK FOR EVAP LEAK
See: Powertrain Management/Emission Control Systems/Evaporative Emissions System/Testing and Inspection.
Is there any leak in EVAP line?
YES - Repair or replace malfunctioning part.
NO - GO TO 6.
6.CHECK EVAP CANISTER VENT CONTROL VALVE
Check the following.
- EVAP canister vent control valve is installed properly. See: Powertrain Management/Emission Control Systems/Evaporative Emissions
System/Evaporative Emission Control Canister/Service and Repair/Removal and Replacement/Removal and Installation.
- EVAP canister vent control valve. See: P Code Charts/P0447.
Is the inspection result normal?
YES - GO TO 7.
NO - Repair or replace EVAP canister vent control valve and O-ring.
7.CHECK IF EVAP CANISTER IS SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached.
2. Check if water will drain from EVAP canister (1).
2 : EVAP canister vent control valve
Does water drain from the EVAP canister?
YES - GO TO 8.
NO-1 - With CONSULT-III: GO TO 10.
NO-2 - Without CONSULT-III: GO TO 11.
8.CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached.
The weight should be less than 2.0 kg (4.0 lb).
Is the inspection result normal?
YES-1 - With CONSULT-III: GO TO 10.
YES-2 - Without CONSULT-III: GO TO 11.
NO - GO TO 9.
9.DETECT MALFUNCTIONING PART
Check the following.
- EVAP canister for damage
- EVAP hose between EVAP canister and vehicle frame for clogging or poor connection
- Repair hose or replace EVAP canister.
10.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
With CONSULT-III
1. Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control solenoid valve from EVAP service port.
2. Start engine and let it idle.
3. Select "PURG VOL CONT/V" in "ACTIVE TEST" mode.
4. Touch "Qu" on CONSULT-III screen to increase "PURG VOL CONT/V" opening to 100%.
5. Check vacuum hose for vacuum.
Vacuum should exist.
Is the inspection result normal?
YES - GO TO 13.
NO - GO TO 12.
11.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION
Without CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control solenoid valve from EVAP service port.
