Test U: Right Seat Belt Buckle Circuit Short To Ground (DTC B2438): Description
WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
Restraints Control Module (RCM) checks right seat belt circuits for faults. If RCM detects a short to ground, it will store Diagnostic Trouble Code (DTC) B2438 in memory and flash Code 7-2 on AIR BAG warning light.