Lost Communication with ECM/PCM “A”


If code U0100 appears, it means that signals are lost between PCM and one or more modules of the vehicle.  Code U0100 refers to lost signals between blocks. This indicates that the Electronic Control Module (ECM), also known as the Powertrain Control Module (PCM), has communication problems with other specific modules.  Subject  The U0100 code is a common network contact… Continue reading Lost Communication with ECM/PCM “A”