DTC U3003-17; Battery Power Supply: Notes

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSE

DTC U3003:17	Battery power supply
DETECTION CONDITION	Voltage of 17.5 V or more detected by EPS CM internal battery voltage observation.
FAIL-SAFE FUNCTION	Control disabled Power steering malfunction indicator light: Illuminated
POSSIBLE CAUSE	Generator malfunction Poor connection at connectors
SYSTEM WIRING DIAGRAM	-