DTC U0001-88: Unit Communication Error (HS-Can) (Auto Leveling Control Module): Outline

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0001:88 (AUTO LEVELING CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Unit communication error (HS-CAN)
Detection condition	The auto leveling control module detected CAN BUS communication line (HS-CAN) malfunction 10 times continuously.
Fail-safe	The headlight leveling actuator is stopped at the position when the malfunction is determined.
Possible cause	Malfunction in CAN BUS communication line
System wiring diagram	Not applicable