This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path. The control module commands the EVAP canister purge solenoid Open and the EVAP canister vent solenoid Closed. This allows vacuum to be applied to the EVAP system.
Many people make the claim that Man has a tailbone left over from evolution. This page will examine these claims and show that mans tailbone is nothing of the sort... and rather than being a left over from evolution, the tailbone has a distinct role and purpose. The following is an excert from:
These muscles attaching to the tailbone include the following: 1  Gluteus Maximus muscle: This is the largest of the gluteal (buttock) muscles. Very important for standing and walking. 2  Levator Ani muscle: This muscle is important for holding in place the anus (where stool, bowel movements exit the body).