Toyota
Nissan Versa
 Sedan Service Manual
Engine » Engine control system (EC) » P0447 EVAP canister vent control valve
DTC Logic

DTC DETECTION LOGIC

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0447 VENT CONTROL VALVE (EVAP canister vent control valve circuit open) An improper voltage signal is sent to ECM through EVAP canister vent control valve.
  • Harness or connectors (EVAP canister vent control valve circuit is open or shorted.)
  • EVAP canister vent control valve

DTC CONFIRMATION PROCEDURE

1.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: Before performing the following procedure, confirm battery voltage is more than 11 V at idle.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1. Start engine and wait at least 8 seconds.
  2. Check 1st trip DTC.

Is 1st trip DTC detected?

YES >> Proceed to EC, "Diagnosis Procedure".

NO >> INSPECTION END

    More about «P0447 EVAP canister vent control valve»:

    DTC Logic

    Diagnosis Procedure

    Component Inspection

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