What does code p1687 mean on a Chrysler Concorde?

Code P1687 on a Chrysler Concorde indicates a problem with the ignition switch or the powertrain control module (PCM) not receiving the expected signals from the ignition switch. This can lead to issues such as the engine not starting or intermittent electrical problems. It's advisable to check the ignition switch, its connections, and the PCM for any faults or wiring issues. If necessary, a professional diagnostic may be required to identify and resolve the issue effectively.