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

The combination meter communicates with the ECM via the CAN communication line (CAN No. 1 Bus).

DTC No.	DTC Detection Condition	Trouble Area
U0100	When either of the following conditions is detected: Vehicle speed is 5 km/h (3.1 mph) or more and IG voltage is 10.5 V or more No communication with ECM continues for 3 seconds or more (No communication to ECM and skid control ECU continues for 60 seconds or more)	CAN communication system ECM