Nissan Frontier D40. Manual - part 380

P0441 EVAP CONTROL SYSTEM

EC-211

< COMPONENT DIAGNOSIS >

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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-III.

4.

Rev engine up to 2,000 rpm.

5.

Touch “Qd” and “Qu” on CONSULT-III screen to adjust “PURG VOL CONT/V” opening and check vacuum
existence.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 4.

3.

CHECK PURGE FLOW

 Without CONSULT-III

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.
Do not depress accelerator pedal even slightly.

5.

Check vacuum gauge indication before 60 seconds pass after
starting engine.

6.

Rev engine up to 2,000 rpm after 100 seconds pass after start-
ing engine.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 4.

4.

CHECK EVAP PURGE LINE

1.

Turn ignition switch OFF. 

2.

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

EC-42, "Description"

.

OK or NG

OK

>> GO TO 5.

NG

>> Repair it.

5.

CHECK EVAP PURGE HOSE AND PURGE PORT

BBIA0620E

PURG VOL CONT/V

VACUUM

100%

Should exist

0%

Should not exist

Vacuum should not exist.

Vacuum should exist.

BBIA0620E

EC-212

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P0441 EVAP CONTROL SYSTEM

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-III)>>GO TO 6.
OK (Without CONSULT-III)>>GO TO 7.
NG

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

6.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT-III

1.

Start engine.

2.

Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III. Check that engine speed var-
ies according to the valve opening.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 7.

7.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-228, "Component Inspection"

.

OK or NG

OK

>> GO TO 8.

NG

>> Replace EVAP canister purge volume control solenoid valve.

8.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR

1.

Disconnect EVAP control system pressure sensor harness connector.

2.

Check that water is not inside connectors.

OK or NG

OK

>> GO TO 9.

NG

>> Replace EVAP control system pressure sensor.

9.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR FUNCTION

Refer to DTC Confirmation Procedure for DTC P0452 

EC-240, "DTC Confirmation Procedure"

, P0453 

EC-

244, "DTC Confirmation Procedure"

.

OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP control system pressure sensor.

10.

CHECK RUBBER TUBE FOR CLOGGING

1.

Disconnect rubber tube connected to EVAP canister vent control valve.

2.

Check the rubber tube for clogging.

OK or NG

SEF367U

SEF368U

P0441 EVAP CONTROL SYSTEM

EC-213

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OK

>> GO TO 11.

NG

>> Clean the rubber tube using an air blower.

11.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-231, "Component Inspection"

.

OK or NG

OK

>> GO TO 12.

NG

>> Replace EVAP canister vent control valve.

12.

CHECK EVAP PURGE LINE

Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks.
Refer to 

EC-42, "Description"

.

OK or NG

OK

>> GO TO 13.

NG

>> Replace it.

13.

CLEAN EVAP PURGE LINE

Clean EVAP purge line (pipe and rubber tube) using air blower.

>> GO TO 14.

14.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-46, "Intermittent Incident"

.

>> INSPECTION END

EC-214

< COMPONENT DIAGNOSIS >

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P0442 EVAP CONTROL SYSTEM

P0442 EVAP CONTROL SYSTEM

On Board Diagnosis Logic

INFOID:0000000005273209

This diagnosis detects leaks in the EVAP purge line using engine intake manifold vacuum.
If pressure does not increase, the ECM will check for leaks in the line between the fuel tank and EVAP canister
purge volume control solenoid valve, under the following Vacuum test conditions.
The EVAP canister vent control valve is closed to shut the EVAP purge line off. The EVAP canister purge vol-
ume control solenoid valve will then be opened to depressurize the EVAP purge line using intake manifold
vacuum. After this occurs, the EVAP canister purge volume control solenoid valve will be closed.

CAUTION:

• Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the

MIL may illuminate.

• If the fuel filler cap is not tightened properly, the MIL may illuminate.
• Use only a genuine NISSAN rubber tube as a replacement.

PBIB3640E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0442
0442

EVAP control system 
small leak detected 
(negative pressure)

EVAP control system has a leak, EVAP 
control system does not operate properly.

• Incorrect fuel tank vacuum relief valve
• Incorrect fuel filler cap used
• Fuel filler cap remains open or fails to close.
• Foreign matter caught in fuel filler cap.
• Leak is in line between intake manifold and 

EVAP canister purge volume control solenoid 
valve.

• Foreign matter caught in EVAP canister vent 

control valve.

• EVAP canister or fuel tank leaks
• EVAP purge line (pipe and rubber tube) leaks
• EVAP purge line rubber tube bent
• Loose or disconnected rubber tube
• EVAP canister vent control valve and the circuit
• EVAP canister purge volume control solenoid 

valve and the circuit

• Fuel tank temperature sensor
• O-ring of EVAP canister vent control valve is 

missing or damaged

• EVAP canister is saturated with water
• EVAP control system pressure sensor
• Fuel level sensor and the circuit
• Refueling EVAP vapor cut valve
• ORVR system leaks