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Home >> Infiniti >> 2003 >> Q45 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0442, DTC P0455 Or DTC P1442: EVAP Control System >> DTC Confirmation Test (Using CONSULT-II)

DTC Confirmation Test (Using CONSULT-II)

NOTE: Before performing test, ensure fuel tank level is 1/4-3/4, ambient temperature is 32-86°F (0-32°C) and EVAP-CPVCV hoses are installed correctly.
  1. Tighten fuel filler cap until ratcheting sound is heard (for DTC P0455 or P1442). Turn ignition on. Turn ignition off and wait at least 10 seconds. Turn ignition on and select DATA MONITOR mode with CONSULT-II.
  2. Ensure the following conditions are met:
    • COOLAN TEMP/S: 32-158°F (0-70°C).
    • INT/A TEMP SE: 32-86°F (0-30°C) for DTC P0442, or 32-140°F (0-60°C) for DTC P0455 or P1442.
  3. Select EVAP SML LEAK P0442/P1442 of EVAPORATIVE SYSTEM in DTC WORK SUPPORT mode with CONSULT- II. Follow instructions displayed.
    NOTE: If engine speed cannot be maintained within range displayed on CONSULT-II screen, perform BASIC INSPECTION. See ON-VEHICLE ADJUSTMENTS article.
  4. If OK is displayed on CONSULT-II, system is okay at this time. If NG is displayed, select SELF-DIAG RESULTS with CONSULT-II. If DTC P0442 is displayed, go to DIAGNOSTIC PROCEDURE (DTC P0442)  . If DTC P0455 OR P1442 is displayed, go to DIAGNOSTIC PROCEDURE (DTC P0455 OR P1442)  .
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