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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1159 (Engine Control System - DTCS P0171 To P0453) >> DTC P0444, P0445 EVAP Canister Purge Volume Control Solenoid Valve >> On Board Diagnosis Logic

On Board Diagnosis Logic

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION POSSIBLE CAUSE

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0444
0444		 EVAP canister purge volume control solenoid valve circuit open An excessively low voltage signal is sent to ECM through the valve
  • Harness or connectors

    (The solenoid valve circuit is open or shorted.)

  • EVAP canister purge volume control solenoid valve
P0445
0445		 EVAP canister purge volume control solenoid valve circuit shorted An excessively high voltage signal is sent to ECM through the valve
  • Harness or connectors

    (The solenoid valve circuit is shorted.)

  • EVAP canister purge volume control solenoid valve
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