U0073 (DCU) - Control Module Communication Bus A Off
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2022 Ford F-550 Super Duty, 2022 Ford F-450 Super Duty, 2022 Ford F-350 Super Duty, 2022 Ford F-250 Super Duty, and 2021 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION U0073 (DCU) - CONTROL MODULE COMMUNICATION BUS A OFF
| Description: This DTC sets when the controller area network (CAN) between the reductant dosage control module and the data link connector (DLC) is open. | |||
Possible Causes:
|
|||
| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST RM . | ||