DTC U0029: F-CAN Communication Circuit Error (F-CAN Bus OFF) (A/T System): General Description

The controller area network (CAN) transmits/receives pulsing signals to/from the control modules simultaneously by using two signal lines (F-CAN A H and F-CAN A L). When the powertrain control module (PCM) does not receive the signals via the F-CAN A lines for a set time, the PCM detects a malfunction and stores a DTC.