Parts for your 2022 Mitsubishi Asx-Temperature sensors

2022 Mitsubishi ASX Temperature Sensors

Based on Mitsubishi Motors service and wiring manuals for the ASX/RVR/Outlander Sport (GA series, including 2017–2022), the 2022 ASX is fitted with multiple temperature sensors. These include the engine coolant temperature (ECT) sensor and intake air temperature (IAT) sensor used by the engine control module, an ambient air temperature sensor for the dash and A/C logic, an A/C evaporator temperature sensor in the HVAC unit, and a transmission fluid temperature sensor within the CVT. This layout is also consistent with the 2022 Owner’s Manual descriptions of temperature displays and engine control, and with Jatco CVT technical literature noting internal fluid temperature sensing. So yes—temperature sensors are absolutely used on the 2022 Mitsubishi ASX.

These sensors quietly keep the ASX running sweet under all Aussie and Kiwi conditions. The ECT sensor lets the ECU manage warm‑up, fuel mixture, ignition timing, fan operation and overheat protection. The IAT fine‑tunes fuelling as air density changes. The ambient sensor feeds the dash and helps the air‑con behave predictably, while the evaporator sensor stops the system freezing up. The CVT’s internal temp sensor protects the gearbox by adjusting line pressure, ratio behaviour and, if needed, triggering limp mode to prevent damage.

• ECT sensor: typically on the cylinder head/thermostat housing near the upper radiator hose under the bonnet.
• IAT: commonly integrated in the intake duct/MAF assembly.
• Ambient sensor: mounted behind the front grille or bumper reinforcement.
• Evaporator temp sensor: clipped into the HVAC box behind the glovebox.
• CVT fluid temp sensor: internal to the transmission (not usually serviced separately).

As for servicing of 2022 Mitsubishi ASX temperature sensors, there’s no scheduled replacement—these thermistors are fit‑and‑forget until they aren’t. During routine services, a quick scan of live data is smart: ECT and IAT should change smoothly with real‑world temperatures. Any wild jumps, implausible readings, hard cold starts, rich running, fans stuck on, erratic A/C or CVT warnings are clues a sensor or connector needs attention.

When replacement is required, use OEM‑spec parts. For the ECT, replace the sealing washer or O‑ring, torque to spec, refill with the correct coolant and bleed air. Avoid topping up with plain water, as poor coolant chemistry can corrode sensors. For IAT and ambient sensors, inspect the harness for rubbed wiring and corroded plugs. The evaporator sensor swap is a glovebox‑out job. CVT temperature sensing is typically part of the internal harness or valve body—professional repair is recommended. After any sensor work, clear DTCs and let the ECU perform its idle relearn so the ASX settles back into its normal rhythm.

• Where is the engine coolant temperature sensor on a 2022 ASX?
  The ECT sensor is usually threaded into the cylinder head or thermostat housing, right near the upper radiator hose under the bonnet. On most ASX variants it’s accessible from above, unplug the connector and you’ll see a small two‑pin sensor pointing sideways or upwards.
• What are the signs a temperature sensor is failing on an ASX?
  Cold‑start fussiness, rich running, poor fuel economy, radiator fans running constantly, erratic temperature display, A/C cutting in and out, or a check‑engine light (codes like P0115–P0119) are common. For CVT issues, overheating warnings or limp mode can indicate dodgy fluid temperature readings.
• Does the CVT have a temperature sensor, and can it be replaced on its own?
  Yes, the CVT uses an internal fluid temperature sensor. On many ASX models it’s integrated into the internal harness or valve body, so it’s not generally a simple external swap. Diagnosis and replacement are best left to a transmission specialist.