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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0442: Evaporative Emission System Small Leak Detected >> Code Enable Criteria

Code Enable Criteria

PCM commands EVAP purge solenoid off once system has reached a predetermined level of vacuum. This test checks if vacuum can be achieved in EVAP system. Failure to develop a vacuum may be caused by a large leak or restriction. This DTC sets after twice failing this test.

For DTC to run, the following conditions must be met:

DTC will set when EVAP system can achieve vacuum, but a vacuum decay is detected during diagnostic test.