DTC C0051-86: Error Steering Angle 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 C0051:86 ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE DETECTION CONDITION AND POSSIBLE CAUSE

Description	Error Steering Angle Signal Received From EPS Control Module
Detection condition	Either a condition in which the steering angle sensor has a malfunction and the EPS control module has not performed steering angle neutral position auto learning, or a condition in which the EPS control module has a malfunction is detected for 5 s or more.
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 start stop unit. DTCs are stored in the EPS control module. EPS control module malfunction AFS control module malfunction
System wiring diagram	Not applicable