DTC U0401:68 [Advanced Keyless Entry And Push Button Start System]: Notes

WARNING: This page is about a different car, the 2010 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0401:68 (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM) DETECTION CONDITION AND POSSIBLE CAUSE

DESCRIPTION	Receiving erratic data from PCM
DETECTION CONDITION	Keyless control module receives the erratic data from PCM when the ignition switch is ON.
POSSIBLE CAUSE	PCM DTC is stored PCM malfunction Keyless control module malfunction