DTC Set Condition
WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
When the tire pressure included in the signal from the TPMS transmitter is less than the specified value, ETACS-ECU < Vehicles without Keyless Operation System > or KOS-ECU < Vehicles with Keyless Operation System > stores this code.