DTC U0420-00: Error Signal Received From EPS Control Module (Radar Unit): Notes

DTC U0420:00 (RADAR UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Error signal received from EPS control module
Detection condition	Communication error between EPS control module and radar unit
Fail-safe	Inhibits the Mazda radar cruise control (MRCC) system control Inhibits the smart brake support (SBS) system control Inhibits the distance recognition support system (DRSS) control
Possible cause	EPS control module malfunction Radar unit malfunction
System wiring diagram	Not applicable