DTC U0420 68: Abnormal Message 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 (LASER SENSOR) DETECTION CONDITIONS AND POSSIBLE CAUSES

DTC	U0420:68	Abnormal message from EPS control module
DETECTION CONDITION	Correct data cannot be received from EPS CM
FAIL-SAFE FUNCTION	Inhibits the smart city brake support (SCBS) controls. Illuminates the master warning light The message "SCBS Inspection Required" is indicated in the display.
POSSIBLE CAUSE	EPS CM malfunction
SYSTEM WIRING DIAGRAM	Not applicable