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DTC P2422

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    •  Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P2422: Evaporative Emission (EVAP) Vent Solenoid Valve Stuck Closed

Circuit/System Description

The EVAP vent solenoid valve controls fresh airflow into the EVAP canister. Battery voltage is supplied to the normally closed evaporative emission (EVAP) vent solenoid valve. The ECM commands the solenoid valve open (venting) or closed (not venting) by grounding the EVAP vent solenoid valve output circuit through an internal switch called a driver. The ECM monitors the EVAP leak detection pump pressure sensor, gauge, to determine if a EVAP system pressure (vacuum) is near or above the reference pressure (vacuum) after a calibrated period of time. The ECM uses this reference to determine if the valve is stuck and sets the DTC when the vacuum exceeds a calibrated threshold.

Conditions for Running the DTC
    • DTCs P043E, P043, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0128, P012B, P012C, P012D, P145C, P145D, P145E, P0222, P0223, P0449, P0451 P0452, P0453, P0461, P0462, P0463, P0498, P0499, P0502, P0503, P06E4, P0722, P0723, P1221, P1458, P1459, P145A, P2066, P2067, P2068, P2400, P2401, P2402, P2418, P2419, P2420, P2421, P2422, P2450, P2537, P2610, U0073, U0074, U0140, U182D is not set.
    • The EVAP purge valve is closed
    • The EVAP vent solenoid transitions from closed to open to closed
    • The EVAP leak detection pump switching valve in not venting, pump position
    • The EVAP leak detection pump is ON
    • The odometer greater than 15.9 km (9.9 mi)
    • The barometric pressure (BARO) is between 70-110 kPa (10-16 PSI)
    • The fuel level is between 10-90%
    • The engine coolant temperature less than 40°C (104°F)
    • The inlet air temperature is between -4 -45°C (25 -113°F)
    • The system voltage greater than 10 V
    • The vehicle speed less than 1.6 km/h (1 MPH)
    • There is no key up during test
    • The refuelling request button is not pressed
    • The service bay test is not active
    • The device control exceeds 0.5 s
    • There are three possible time windows for this test to run. Up to that point and through this time period the propulsion system must not be active. These time windows are: 5.0, 7.0 or 9.5 hours.

Conditions for Setting the DTC

Sufficient pressure or vacuum exist in the fuel tank system.

    • The fuel tank pressure (FTP) sensor indicates a pressure greater than 0.697 kPa (0.1 PSI) or a vacuum less than -0.697 kPa (-0.1 PSI) and the vent solenoid is commanded OPEN.
    • The change in the FTP sensor reading is less than 1 kPa (0.15 PSI) after 10 s.

Or

No pressure or vacuum exists in the fuel tank system

    • The FTP sensor indicates a pressure less than 0.697 kPa (0.1 PSI) or a vacuum greater than -0.697 kPa (-0.1 PSI) and the vent solenoid is commanded OPEN
    • The EVAP leak detection pump is commanded ON
    • The 0.020" reference orifice vacuum measurement minus the EVAP leak detection pump sensor, gauge, vacuum reading is less than 0.3 kPa (0.04 PSI) after 5 s.

Action Taken When the DTC Sets

DTC P2422 is a Type B DTCs.

Conditions for Clearing the DTC

DTC P2422 is a Type B DTCs.

Diagnostic Aids
    • A P0451 or P0497 can set with the Vehicle ON, the engine running and a stuck valve.
    • A P0451 or P2422 can set with the Vehicle in Service Mode and a stuck valve.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Evaporative Emission Control System Description

Hybrid Modes of Operation Description

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification
  1. Engine running, observe the DTC information with a scan tool. DTC P0449, P0498, or P0499 should not set.
  2. Vehicle in Service Mode, command the EVAP vent solenoid valve ON and OFF with the scan tool. An audible click should be heard when the valve operates.
  3. Vehicle in Service Mode, observe the EVAP vent solenoid valve output circuit parameters with a scan tool.
    4. • EVAP Vent Solenoid Valve Output Circuit High Voltage Test Status
    • EVAP Vent Solenoid Valve Output Circuit Open Test Status
    • EVAP Vent Solenoid Valve Output Circuit Low Voltage Test Status
      Each parameter should display OK or Not Run.
  4. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

Component Testing
  1. Vehicle OFF, disconnect the harness connector at the Q13 evaporative emission vent solenoid valve.
  2. Test for 25.0-30.0 Ω between the control terminal 1 and the battery voltage terminal 2.
    3. ⇒If not within the specified range, replace the Q13 evaporative emission vent solenoid valve.
  3. Test for no air flow through the Q13 evaporative emission vent solenoid valve by applying vacuum to the pump side of the valve. It should hold 1-2 in. Hg (3-7 kPa) for 30 s.
    4. ⇒If not within the specified range, replace the Q13 evaporative emission vent solenoid valve.
  4. Reconnect the harness connector at the Q13 evaporative emission vent solenoid valve.
  5. Energise the Q13 evaporative emission vent solenoid valve with a scan tool and apply vacuum to the pump side of the valve. It should not hold vacuum.
    6. ⇒If not within the specified range, replace the Q13 evaporative emission vent solenoid valve.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Evaporative Emission Canister Vent Solenoid Valve Replacement
    • Control Module References for ECM replacement, setup, and programming
   


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