DTC U0100: Lost Communication with ECM / PCM "A" [08/2015 - ]: Description

The combination meter communicates with the ECM via the CAN line.

DTC Code	DTC Detection Condition	Trouble Area
U0100	When either of following conditions is detected: Vehicle speed 5 km/h (3 mph) or more and IG voltage 10.5 V or more No communication with ECM continues for 3 seconds or more (No communication to ECM or skid control ECU continues for 60 seconds or more)	CAN communication system