DTC U0028-88: Unit Communication Error (Local-Can): Notes

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Description	Unit communication error (LOCAL-CAN)
Detection condition	The connectivity master unit (CMU) detects CAN bus communication line (LOCAL-CAN) malfunction 10 times continuously.
Fail-safe	Not applicable
Possible cause	Malfunction in CAN bus communication line Connectivity master unit (CMU) malfunction Malfunction in CAN bus communication line
System wiring diagram	Not applicable