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Home >> Oldsmobile >> 2003 >> Bravada AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Self-Diagnostics - 4.2L >> Diagnostic Tests >> DTC P0442: EVAP System - Small Leak Detected >> Diagnostic Aids

Diagnostic Aids

NOTE: If carbon release is detected, see EVAPORATIVE EMISSION SYSTEM CLEANING in REMOVAL & INSTALLATION - BRAVADA, ENVOY, ENVOY XL, TRAILBLAZER & TRAILBLAZER EXT .

Reviewing the Failure Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set occurs. This may assist in diagnosing the condition.

To aid in locating an intermittent leak, use the Pressure/Purge Diagnostic Station (J-41413 EVAP) to pressurize the EVAP system. Move all EVAP system components while testing with the Ultrasonic Leak Detector (J-41416).

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