Conditions for Setting the DTC

WARNING: This page is about a different variant/trim than selected.

The ECM detects that the FTP on a cold start-up is less than -22.27 mm Hg (-11.93 in. H2O or greater than 11.25 mm Hg (6.02 in. H2O for 25 seconds.
The ECM does not detect a change in tank vacuum when purge duty cycle is greater than 40 percent. The change in vacuum must be less than 0.37 mm Hg (0.20 in. H2O) when purge is active. This condition requires 4 failures to set the DTC for 10 seconds each time.
The ECM detects that the FTP sensor signal oscillates greater than 6.07 mm Hg (3.25 in. H2O) from a zero point for greater than 25 seconds. The zero point may vary and the vehicle speed must be less than 31 km/h (19 mph) for this test.