Normal Operation
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
During each key insertion and vehicle start sequence, the powertrain control module (PCM) and the passive anti-theft system (PATS) transceiver read the PATS key identification code.
DTC B2103 - sets when there has been a PATS transceiver antenna failure. The PATS transceiver may need to be replaced.
Possible Causes
- PATS transceiver