DTC C1031 68: Tire Pressure Monitoring System (TPMS) System: Notes

WARNING: This page is about a different car, the 2014 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DTC C1031 68 DETECTION CONDITIONS AND POSSIBLE CAUSES (DYNAMIC STABILITY CONTROL)

DTC	C1031:68	Tire pressure monitoring system (TPMS) system
DETECTION CONDITION	Error is detected in ambient temperature sensor from PCM via CAN communication.
FAIL-SAFE FUNCTION	Tire pressure monitoring system warning light illuminates after flashes. Inhibits the TPMS control.
POSSIBLE CAUSE	Ambient temperature sensor malfunction PCM malfunction
SYSTEM WIRING DIAGRAM	-