Nissan Frontier D22. Manual - part 597

DTC P0441 EVAP CONTROL SYSTEM

EC-1491

[VG33ER]

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EC

DTC P0441 EVAP CONTROL SYSTEM

PFP:14950

System Description

UBS00DXF

NOTE:
If DTC P0441 is displayed with P0510, perform trouble diagnosis for DTC P0510 first. (See 

EC-1580

 .)

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. Purge flow exposes the EVAP control system pressure
sensor to intake manifold vacuum.

On Board Diagnosis Logic

UBS00DXG

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 Confirmation Procedure

UBS00DXH

CAUTION:

Always drive vehicle at a safe speed.

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 5 seconds before conducting the next test.
TESTING CONDITION:
Always perform test at a temperature of 5

°C (41°F) or more.

PBIB1438E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0441

EVAP control system 
incorrect purge flow

EVAP control system does not operate prop-
erly, EVAP control system has a leak between 
intake manifold and EVAP control system pres-
sure sensor.

●

EVAP canister purge volume control 
solenoid valve stuck closed

●

EVAP control system pressure sensor 
and the circuit

●

Loose, disconnected or improper con-
nection of rubber tube

●

Blocked rubber tube

●

Cracked EVAP canister

●

EVAP canister purge volume control 
solenoid valve circuit

●

Closed throttle position switch

●

Blocked purge port

●

EVAP canister vent control valve

EC-1492

[VG33ER]

DTC P0441 EVAP CONTROL SYSTEM

 WITH CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF and wait at least 5 seconds.

3.

Start engine and let it idle for at least 70 seconds.

4.

Select “PURG FLOW P0441” of “EVAPORATIVE SYSTEM” in “DTC WORK SUPPORT” mode with CON-
SULT-II.

5.

Touch “START”.
If “COMPLETED” is displayed, go to step 7.

6.

When the following conditions are met, “TESTING” will be displayed on the CONSULT-II screen. Maintain
the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take at least 35 seconds.)

If “TESTING” is not changed for a long time, retry from step 2.

7.

Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”. If “NG” is displayed, refer to 

EC-

1493, "Diagnostic Procedure"

 .

Overall Function Check

UBS00DXI

Use this procedure to check the overall monitoring function of the EVAP control system purge flow monitoring.
During this check, a DTC might not be confirmed.

 WITH GST

1.

Lift up drive wheels.

2.

Start engine and warm it up to normal operating temperature.

3.

Turn ignition switch OFF and wait at least 5 seconds.

4.

Start engine and wait at least 70 seconds.

5.

Set voltmeter probes to ECM terminals 62 (EVAP control system
pressure sensor signal) and ground.

6.

Check EVAP control system pressure sensor value at idle speed
and note it.

7.

Establish and maintain the following conditions for at least 1
minute.

8.

Verify that EVAP control system pressure sensor value stays 0.1V less than the value at idle speed (mea-
sured at step 6) for at least 1 second.

Selector lever

Suitable position

VHCL SPEED SE

32 - 120 km/h (20 - 75 MPH)

ENG SPEED

500 - 3,400 rpm

B/FUEL SCHDL

1.0 - 13.0 msec

COOLAN TEMP/S

0 - 119

°C (32 - 246°F)

PBIB0826E

Air conditioner switch

ON

Headlamp switch

ON

Rear window defogger switch

ON

Engine speed

Approx. 3,000 rpm

Gear position

Any position other than P, N or R

SEF906U

DTC P0441 EVAP CONTROL SYSTEM

EC-1493

[VG33ER]

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9.

If NG, go to 

EC-1493, "Diagnostic Procedure"

 .

Diagnostic Procedure

UBS00DXJ

1. 

CHECK EVAP CANISTER

1.

Turn ignition switch OFF.

2.

Check EVAP canister for cracks.

OK or NG

OK (With CONSULT-II)>>GO TO 2.
OK (Without CONSULT-II)>>GO TO 3.
NG

>> Replace EVAP canister.

2. 

CHECK PURGE FLOW

 With CONSULT-II

1.

Disconnect vacuum hose connected to EVAP canister purge
volume control solenoid valve at EVAP service port and install
vacuum gauge.

2.

Start engine and let it idle.

3.

Select  “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II.

4.

Rev engine up to 2,000 rpm.

5.

Touch  “Qd” and “Qu” on CONSULT-II screen to adjust “PURG
VOL CONT/V” opening.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 4.

3. 

CHECK PURGE FLOW

 Without CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Stop engine.

3.

Disconnect vacuum hose connected to EVAP canister purge
volume control solenoid valve at EVAP service port and install
vacuum gauge.

4.

Start engine and let it idle for at least 80 seconds.

5.

Check vacuum gauge indication when revving engine up to
2,000 rpm.
Vacuum should exist.

6.

Release the accelerator pedal fully and let idle.
Vacuum should not exist.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 4.

AEC649A

PURG VOL CONT/V

VACUUM

100%

Should exist

0%

Should not exist

SEF677Y

AEC649A

EC-1494

[VG33ER]

DTC P0441 EVAP CONTROL SYSTEM

4. 

CHECK EVAP PURGE LINE

1.

Turn ignition switch OFF.

2.

Check EVAP purge line for improper connection or disconnection.
Refer to 

EC-1741, "EVAPORATIVE EMISSION LINE DRAWING"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Repair it.

5. 

CHECK EVAP PURGE HOSE AND PURGE PORT

1.

Disconnect purge hoses connected to EVAP service port A  and
EVAP canister purge volume control solenoid valve B .

2.

Blow air into each hose and EVAP purge port C .

3.

Check that air flows freely.

OK or NG

OK (with CONSULT-II)>>GO TO 6.
OK (without CONSULT-II)>>GO TO 7.
NG

>> Repair or clean hoses and/or purge port.

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