DTC U0423; U0443; Abnormal Message From Instrument Cluster: 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	U0423:00/U0443:00	Abnormal message from instrument cluster
DETECTION CONDITION		Correct data cannot be received from instrument cluster
FAIL-SAFE FUNCTION		U0423:00 Illuminates the smart city brake support (SCBS) indicator light (amber) ^1 Tire pressure monitoring system warning light ^1 illuminates after flashes. Inhibits the TPMS ^1 and smart city brake support (SCBS) ^1 controls. U0443:00 Illuminates the smart city brake support (SCBS) indicator light (amber). Inhibits the smart city brake support (SCBS) controls. *: If equipped.
POSSIBLE CAUSE		Instrument cluster malfunction
SYSTEM WIRING DIAGRAM		Not applicable