DTC U0420-68: Error Signal Received From EPS Control Module: Notes

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0420:68 ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE DETECTION CONDITION AND POSSIBLE CAUSE

Description	Error Signal Received From EPS Control Module
Detection condition	The AFS control module received error signal from the EPS control module for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe	The swivel actuator is moved to the center. Control of the headlight auto leveling system is continued.
Possible cause	DTCs are stored in the EPS control module. EPS control module malfunction AFS control module malfunction
System wiring diagram	Not applicable