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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 335 (Engine Controls - Self-Diagnostics - 3.0L) >> Diagnostic Tests >> DTC P0440: Evaporative Emission System >> Conditions For Running DTC

Conditions For Running DTC

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0455 diagnostic runs once during the EVAP diagnostic test once per ignition cycle. If DTC P0455 fails, the ECM will re-run the EVAP diagnostic test from the beginning and must fail P0455 again to set.

If an EVAP diagnostic test is aborted due to changing enabled criteria, the ECM will run the entire EVAP test up to three times per ignition cycle.