At a glance
What can fail
The nut securing the throttle valve shaft may be loose due to insufficient tightening during manufacturing. If it loosens further, the throttle valve could stick, preventing normal deceleration when you release the gas pedal.
What the fix does
Technicians will inspect your vehicle and replace any throttle housing where the nut is not properly tightened.
Summarized — see the official notice for exact wording, dates, and contacts.