Conditions for Setting the DTC: B0066

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Seat belt pretensioner - LF high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
Seat belt pretensioner - LF high circuit is less than 2.4 volts and seat belt pretensioner - LF deployment loop resistance is less than 6 ohms for 500 milliseconds.