2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 490
See: P Code Charts/P0181.
Is the inspection result normal?
YES - GO TO 15.
NO - Replace "fuel level sensor unit and fuel pump (main)".
15.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
See: P Code Charts/P0451.
Is the inspection result normal?
YES - GO TO 16.
NO - Replace EVAP control system pressure sensor.
16.CHECK EVAP PURGE LINE
Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection. See: Powertrain
Management/Emission Control Systems/Evaporative Emissions System/Description and Operation/System Diagram.
Is the inspection result normal?
YES - GO TO 17.
NO - Repair or reconnect the hose.
17.CLEAN EVAP PURGE LINE
Clean EVAP purge line (pipe and rubber tube) using air blower.
- GO TO 18.
18.CHECK EVAP/ORVR LINE
Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kinks, looseness and improper connection. For location, See:
Powertrain Management/Emission Control Systems/Evaporative Emissions System/Refueling Vapor Recovery System/Testing and
Inspection/Diagnosis Procedure.
Is the inspection result normal?
YES - GO TO 19.
NO - Repair or replace hoses and tubes.
19.CHECK RECIRCULATION LINE
Check recirculation line between filler neck tube and fuel tank for clogging, kinks, cracks, looseness and improper connection.
Is the inspection result normal?
YES - GO TO 20.
NO - Repair or replace hose, tube or filler neck tube.
20.CHECK REFUELING EVAP VAPOR CUT VALVE
See: Powertrain Management/Emission Control Systems/Evaporative Emissions System/Refueling Vapor Recovery System/Testing and
Inspection/Component Inspection.
Is the inspection result normal?
YES - GO TO 21.
NO - Replace refueling EVAP vapor cut valve with fuel tank.
21.CHECK FUEL LEVEL SENSOR
See: Instrument Panel, Gauges and Warning Indicators/Testing and Inspection/Component Tests and General Diagnostics/Combination
Meter/Electrical Component Inspection.
Is the inspection result normal?
YES - GO TO 22.
NO - Replace "fuel level sensor unit and fuel pump (main)".
22.CHECK INTERMITTENT INCIDENT
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble
Diagnosis For Intermittent Incident/Description.
- INSPECTION END
Component Inspection
1.CHECK FUEL FILLER CAP
1. Turn ignition switch OFF.
2. Remove fuel filler cap.
3. Wipe clean valve housing.
