Nissan Rogue (T33) 2021-Present Service Manual: P0450 Evap Control System Pressure Sensor

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / P0450 Evap Control System Pressure Sensor

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0450 00

EVAP SYS PRES SEN

(EVAP System Pressure Sensor/Switch "A" Circuit) 		Diagnosis condition —
Signal (terminal) EVAP control system pressure sensor signal
Threshold An excessively low or high voltage from the sensor is sent to ECM
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors (EVAP control system pressure sensor circuit is shorted.)

  • EVAP control system pressure sensor

  • Sensor power supply 3 circuit

FAIL-SAFE

Not applicable

DTC Confirmation Procedure

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 2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  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. Select “DATA MONITOR” mode of “ENGINE” using CONSULT.

  5. Make sure that “FUEL T/TMP SE” indication is more than 0°C (32°F).

  6. Start engine and wait at least 20 seconds.

  7. Check 1st trip DTC.

With GST

  1. Start engine and warm it up to normal operating temperature.

  2. Set voltmeter probes to ECM harness connector terminals as per the following.

    ECM Voltage
    Connector + −
    Terminal
    E21 133 155 Less than 4.2 V

  3. Make sure that the voltage is less than 4.2 V.

  4. Turn ignition switch OFF and wait at least 10 seconds.

  5. Start engine and wait at least 20 seconds.

  6. Check 1st trip DTC.

Is 1st trip DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER

  1. Turn ignition switch OFF.

  2. Disconnect EVAP control system pressure sensor harness connector.

  3. Check sensor harness connector for water.

    Water should not exist.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace harness connector.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY

  1. Turn ignition switch ON.

  2. Check the voltage between EVAP control system pressure sensor harness connector and ground.

    + −

    Voltage

    (Approx.)
    EVAP control system pressure sensor
    Connector Terminal
    C51 3 Ground 5 V

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 3.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connector.

  3. Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.

    + − Continuity
    EVAP control system pressure sensor ECM
    Connector Terminal Connector Terminal
    C51 3 E21 133 Existed

  4. Also check harness for short to ground and to power.

Is the inspection result normal?

YES>>

Perform the trouble diagnosis for power supply circuit.

NO>>

Repair or replace error-detected parts

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connector.

  3. Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.

    + − Continuity
    EVAP control system pressure sensor ECM
    Connector Terminal Connector Terminal
    C51 1 E21 155 Existed

  4. Also check harness for short to power.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace error-detected parts.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR SIGNAL CIRCUIT

  1. Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.

    + − Continuity
    EVAP control system pressure sensor ECM
    Connector Terminal Connector Terminal
    C51 2 E21 129 Existed

  2. Also check harness for short to ground and to power.

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair or replace error-detected parts.

CHECK RUBBER TUBE

  1. Disconnect rubber tube connected to EVAP canister vent control valve.

  2. Check the rubber tube for clogging.

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Clean the rubber tube using an air blower, repair or replace rubber tube.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

Replace EVAP canister vent control valve. Refer to Removal and Installation.

CHECK IF EVAP CANISTER IS SATURATED WITH WATER

  1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached.

  2. Check if water will drain from the EVAP canister.

Does water drain from EVAP canister?

YES>>

GO TO 9.

NO>>

Check intermittent incident. Refer to Intermittent Incident.

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached.

The weight should be less than 2.3 kg (5.1 lb).

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

GO TO 10.

DETECT MALFUNCTIONING PART

Check the following.

  • EVAP canister for damage

  • EVAP hose between EVAP canister and Nissan Ariya vehicle frame for clogging or poor connection

Is the inspection result normal?

YES>>

Replace EVAP control system pressure sensor. Refer to Removal and Installation.

NO>>

Repair hose or replace EVAP canister. Refer to Removal and Installation.

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