Nissan GT-R (R35) · Service Manual ENGINE

P0441 EVAP CONTROL SYSTEM

VR38

P0441

DTC Logic

 
 DTC DETECTION LOGIC

NOTE：
 If DTC P0441 is displayed with other DTC such as P2122, P2123, P2127, P2128 or P2138, first perform trouble diagnosis for other DTC.
In this evaporative emission (EVAP) control system, purge flow occurs during non-closed throttle conditions. Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP canister purge volume control solenoid valve is open to admit purge flow. Purge flow exposes the EVAP control system pressure sensor to intake manifold vacuum.
Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow are adequate. If not, a malfunction is determined.

PBIB1026E.JPG

DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0441
EVAP control system incorrect purge flow
EVAP control system does not operate properly, EVAP control system has a leak between intake manifold and EVAP control system pressure sensor.
  • EVAP canister purge volume control solenoid valve stuck closed
  • EVAP control system pressure sensor and the circuit
  • Loose, disconnected or improper connection of rubber tube
  • Blocked rubber tube
  • Cracked EVAP canister
  • EVAP canister purge volume control solenoid valve circuit
  • Accelerator pedal position sensor
  • Blocked purge port
  • EVAP canister vent control valve

 
 DTC CONFIRMATION PROCEDURE

 
 1.INSPECTION START
 
 2.PRECONDITIONING
 
 3.PERFORM DTC CONFIRMATION PROCEDURE-I
 
 4.PERFORM DTC CONFIRMATION PROCEDURE-II
 
 5.PERFORM DTC CONFIRMATION PROCEDURE-III
 
 6.PERFORM COMPONENT FUNCTION CHECK

Component Function Check


 
 1.PERFORM COMPONENT FUNCTION CHECK

Diagnosis Procedure


 
 1.CHECK EVAP CANISTER
 
 2.CHECK PURGE FLOW
 
 3.CHECK PURGE FLOW
 
 4.CHECK EVAP PURGE LINE
 
 5.CHECK EVAP PURGE HOSE AND PURGE PORT
 
 6.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
 
 7.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
 
 8.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
 
 9.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION
 
 10.CHECK RUBBER TUBE FOR CLOGGING
 
 11.CHECK EVAP CANISTER VENT CONTROL VALVE
 
 12.CHECK EVAP PURGE LINE
 
 13.CLEAN EVAP PURGE LINE
 
 14.CHECK INTERMITTENT INCIDENT