DTC B2445, U2018: Passenger-Side Air Bag Sensor (Internal Circuit Abnormal); Passenger-Side Air Bag Sensor (Communication Error): 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 B2445, U2018 - Detection Condition And Possible Cause Chart

Courtesy of MAZDA MOTORS CORP.