DTC U1102: F-CAN Malfunction (BUS-OFF): General Description

The controller area network (CAN) transmits/receives pulsing signals to/from the control modules simultaneously by using two signal lines (CANH and CANL).

When the engine control module (ECM) does not receive the signals via the CAN lines for a certain time, the ECM detects a malfunction and a DTC is stored.