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

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

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

Description	Error signal received from EPS control module
Detection condition	AFS control module received the error signal from the EPS control module for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe function	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