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:
Tailbone pain is often misdiagnosed because of the location of the coccyx, the technical word for tailbone. Because it sits at the very end of the spine, it can be diagnosed as buttocks pain or even more often, as lower back pain. Tailbone pain is actually a different condition altogether.