Trouble Judgment
WARNING: This page is about a different car, the 2015 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
The A/C controller assembly (A/C-ECU) or heater controller assembly (A/C-ECU) (vehicles without A/C) receives air conditioning operation-related signals from the ETACS-ECU via the CAN bus lines. If the ECU cannot receive any of the air conditioning control-related signals from the ETACS-ECU, the diagnostic trouble code U0141 is stored.