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Home >> Infiniti >> 2001 >> Q45 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0440, P0455 Or P1440: EVAP Control System >> Using Scan Tool
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Using Scan Tool

NOTE: Perform test when ambient temperature is 32-86°F (0-32°C). Ensure TCS switch is in OFF position. Fuel level should be low during this test.
  1. Drive vehicle according to specified driving pattern to set System Readiness Test (SRT) codes. See SYSTEM READINESS TEST (SRT)  under SELF-DIAGNOSTIC SYSTEM. Stop vehicle and go to next step.
  2. Select MODE 1 on scan tool and check SRT status of EVAP system. If EVAP system SRT is complete, system is okay at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.
    3. NOTE: It is not necessary to allow engine to cool before driving vehicle.
  3. Perform driving pattern again. Select MODE 3 on scan tool. If DTC P0440, P0455, P1440 or P1447 is set, perform appropriate diagnostic procedure. If DTC P0440, P0455, P1440 or P1447 is not set, go back to step  2.
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