Having a Mazda B1886 Code can be very inconvenient and can cause a lot of issues when it comes to driving. The code stands for Passenger-Side Pre-Tensioner Seat Belt Circuit Resistance Low, meaning that there is a resistance other than 1.0-9.7 ohms (or 0.9-6.23 ohms on 2 step deployment) detected in the passenger-side pre-tensioner seat