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Home >> Saturn >> 2000 >> LS Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0442: EVAP System - Small Leak Detected >> Diagnostic Procedures
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Diagnostic Procedures

  1. Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing OBD system check, go to next step.
  2. Turn ignition on, with engine off. Using scan tool, review Freeze Frame/Failure Records. If DTC P0452, P0453, P0461, P0462, P0463 or P1640 is set, diagnose affected first. If DTC P0452, P0453, P0461, P0462, P0463 or P1640 is not set, go to next step.
  3. Using EVAP Pressure/Purge Cart (J 41413) and an ultrasonic leak detector, locate and repair leak(s). After repairs, retest system.
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