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.

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
Do you have CONSULT-III?
Do you have CONSULT-III?
YES>>GO TO 2.
NO>>GO TO 6.
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Always perform test at a temperature of 5°C (41°F) or more.
>>GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT-III

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Start engine and let it idle for at least 70 seconds.
6. Select “PURG FLOW P0441” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with CONSULT-III.
7. Touch “START”.

Is “COMPLETED” displayed on CONSULT-III screen?
YES>>GO TO 5.
NO>>GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE-II
When the following conditions are met, “TESTING” will be displayed on the CONSULT-III screen. Maintain the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take at least 35 seconds.)

Selector lever | Suitable position
VHCL SPEED SE | 32 - 120 km/h (20 - 75 mph)
ENG SPEED | 500 - 3,000 rpm
B/FUEL SCHDL | 1.3 - 9.0 msec
COOLAN TEMP/S | More than 0°C (32°F)

■ CAUTION ■
Always drive vehicle at a safe speed.
Is “COMPLETED” displayed on CONSULT-III screen?
YES>>GO TO 5.
NO>>Perform DTC CONFIRMATION PROCEDURE again. GO TO 3.
5.PERFORM DTC CONFIRMATION PROCEDURE-III
Touch “SELF-DIAG RESULTS”.
Which is displayed on CONSULT-III screen?
OK>>INSPECTION END
NG>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
6.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to Component Function Check (GT-R certified NISSAN dealer).
NOTE：
Use component function check to check the overall monitoring function of the EVAP control system purge flow monitoring. During this check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES>>INSPECTION END
NO>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).