FixVault

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-5. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE

Description Error signal received from electric power steering (EPS) control module
Detection condition
  • Blind spot monitoring (BSM) control module (LH) receives the error signal from the electric power steering (EPS) control module for 5 s or more.
Fail-safe
  • Blind spot monitoring (BSM) system is stopped.
Possible cause
  • DTCs are stored in the electric power steering (EPS) control module.
  • DTCs are stored in the instrument cluster.
  • Electric power steering (EPS) control module malfunction
  • Instrument cluster malfunction
  • Blind spot monitoring (BSM) control module (LH) malfunction
System wiring diagram Not applicable