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Home >> Pontiac >> 2003 >> Aztek AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> DTC P0442: EVAP System - Small Leak >> Test Description
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Test Description

The numbers below refer to the step number 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 system is less pressurized, 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.