DTC B1884, B1890: Passenger Air Bag Deactivation (PAD) Indicator Circuit Open Or Short To Body Ground; Passenger Air Bag Deactivation (PAD) Indicator Circuit Short To Power Supply: Notes

WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: DTC B1884, B1890 - Detection Condition And Possible Cause Chart

Courtesy of MAZDA MOTORS CORP.