Normal Operation

WARNING: This page is about a different car, the 2011 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0100:87 (Lost Communication With ECM/PCM "A": Missing Message) - sets when the RFA module is missing messages from the PCM over the High Speed Controller Area Network (HS-CAN) are missing.

This pinpoint test is intended to diagnose the following:

Module communication
PCM
RFA module