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Home >> Pontiac >> 2001 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 420 (Engine Control System Self-Diagnostics - 3.8L) >> Diagnostic Tests >> DTC P0442: EVAP Control System Small Leak Detected >> Test Description
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Test Description

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The numbers below refer to the step numbers in the diagnostic procedures.

  1. 2

    This step verifies that a failure condition is present.
  2. 4

    Introducing smoke in 15 second intervals may allow smaller leak areas to be more noticeable. When the system is less pressurized, the smoke will sometimes escape in a more condensed manner.
  3. 6

    This step verifies that repairs are complete and that there are no other leaks in the system.