DTC U0100: Lost Communication with ECM / PCM "A": Description

The combination meter assembly and the ECM exchange signals through the CAN communication system.

DTC No.	DTC Detecting Conditions	Trouble Areas
U0100	When either of following conditions detected: Vehicle speed 3.1 mph (5 km/h) or more and IG voltage 10.5 V or more No communication with ECM continues for 3 seconds or more (Communication with neither ECM nor skid control ECU for 60 seconds or more)	CAN communication system ECM