Parts for your 2023 Subaru Impreza-Temperature sensors

2023 Subaru Impreza temperature sensors — what they do and how to look after them

Temperature sensors are absolutely used on the 2023 Subaru Impreza. Subaru’s own technical literature (Subaru Technical Information System service manual for the FB20 engine and Lineartronic CVT, plus the 2023 Owner’s Manual showing the outside temperature display and climate control functions) details multiple temperature inputs. These include the engine coolant temperature (ECT) sensor for the ECU, an intake air temperature (IAT) sensor integrated with the airflow meter, a CVT fluid temperature sensor within the transmission control system, an ambient air temperature sensor ahead of the radiator, and an in‑cabin thermistor for automatic A/C models. So, temperature sensors are relevant, fitted, and critical to how the Impreza runs and keeps occupants comfy.

Each sensor feeds the car’s brains with heat data to keep fuel trims tidy, timing safe, emissions clean, and drivability smooth. On the FB20, the ECT sensor guides warm‑up enrichment, fan operation, and knock strategy