2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 488
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Turn ignition switch ON.
6. Turn ignition switch OFF and wait at least 10 seconds.
7. Turn ignition switch ON.
8. Check 1st trip DTC.
Is 1st trip DTC displayed?
YES-1 - P0441: Go to See: P Code Charts/P0441.
YES-2 - P0442: Go to See: P Code Charts/P0442.
NO - INSPECTION END
Diagnosis Procedure
1.CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel filler cap design.
Is the inspection result normal?
YES - GO TO 2.
NO - 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.
Is the inspection result normal?
YES - GO TO 3.
NO - Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. Retighten until ratcheting sound is heard.
3.CHECK FUEL FILLER CAP FUNCTION
Check for air releasing sound while opening the fuel filler cap.
Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4.
4.CHECK FUEL TANK VACUUM RELIEF VALVE
See: P Code Charts/P0442.
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.
