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

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSE

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