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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (On-Board Diagnostic - Adaptive Front Lighting System Control Module) >> DTC U0420-68; Error Signal Received From Electric Power Steering (EPS) Control Module >> Notes
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DTC U0420-68; Error Signal Received From Electric Power Steering (EPS) Control Module: Notes

WARNING: This page is about a different car, the 2017 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION AND POSSIBLE CAUSE

Description Error signal received from electric power steering (EPS) control module
Detection condition
  • The adaptive front lighting system (AFS) control module received error signal from the electric power steering (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 electric power steering (EPS) control module.
  • Electric power steering (EPS) control module malfunction
  • Adaptive front lighting system (AFS) control module malfunction
System wiring diagram Not applicable