Conditions for Setting the DTC

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

There are 2 stages to setting this DTC. Stage 1, prep test, then stage 2 test.

If fuel tank pressure sensor reading is greater than 2.5 in H20 of pressure or less than -5 in H20 of vacuum for 60 s
OR
If fuel tank pressure sensor reading is less than -12 in H20 of vacuum for 5 s before 10 L (2.6 gal) of purge volume
After setting the DTC for the first time, 2 liters (0.5 gallons) of fuel must be consumed before setting the DTC for the second time.