Diagnostic Function
WARNING: This page is about a different car, the 2017 Mitsubishi Lancer, 2016 Mitsubishi Lancer, and 2015 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
If the signal from A/C-ECU (vehicles with A/C) or heater control unit (vehicles without A/C) cannot be received, the WCM sets DTC U0164.