Test M: Right Seat Belt Buckle Circuit Short To Ground (DTC B2438): Description
WARNING: This page is about a different car, the 2003 Mercury Sable and 2003 Ford Taurus. 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 DTC B2438 in memory and flash Code 52 on AIR BAG warning light.