Parts for your 2019 Mitsubishi Eclipse cross-Temperature sensors

2019 Mitsubishi Eclipse Cross Temperature Sensors

Temperature sensors are absolutely used on the 2019 Mitsubishi Eclipse Cross. Technical references that confirm this include the Mitsubishi Motors Eclipse Cross (GK) Service Manual (Engine Control – ECT and IAT, CVT Control – CVT Fluid Temperature Sensor, Heating & Air Conditioning – Ambient and Evaporator Sensors) and the Mitsubishi ASA parts catalogue for the 4B40 1.5‑litre turbo petrol and CVT models. These sources detail the engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensing, CVT fluid temperature sensing, and HVAC temperature sensors fitted to this vehicle.

On this model, temperature sensors do a lot of heavy lifting. The ECT sensor tells the ECU how warm the engine is, so it can sort cold starts, fuelling, ignition timing, and radiator fan operation. The IAT sensor (integrated with the intake pressure sensor on the Eclipse Cross) watches the incoming air temp, helping the ECU manage boost, air density, and knock control. The CVT uses a fluid temperature sensor to protect the transmission, adjust line pressure, and trigger failsafes if things get too hot. Around the cabin, the ambient and evaporator temperature sensors help the climate control keep things comfy and prevent the evaporator from icing up.

There’s no set replacement interval for these sensors, but they should be checked during servicing if any drivability or A/C quirks pop up. Common clues include:

• Hard cold starts, high idle, poor economy, or the radiator fan running constantly (ECT/IAT issues)
• Sluggish or “limp” behaviour and overheat warnings under load (CVT fluid temperature)
• Erratic A/C performance or incorrect outside temp display (HVAC sensors)

Good workshop practice for the Eclipse Cross is to scan for DTCs and live data. Codes like P0115–P0119 (ECT), P0113/P0112 (IAT), and P0711 (CVT fluid temp) are common touchpoints in the factory manual. If replacing the ECT sensor, work on a cold engine, relieve cooling system pressure, and top up with the correct Mitsubishi Super Long Life Coolant premix afterwards. Tighten to the specification in the service manual and ensure the connector is dry and clean. For the IAT (in the manifold pressure sensor), check the harness and sealing O‑ring, and avoid oiling the sensor tip. The CVT fluid temp sensor is internal, diagnosis is via scan data and harness checks, and any in-gearbox work should follow CVT service procedures exactly. Genuine or high‑quality OEM‑equivalent sensors are recommended to keep calibrations spot on.

How many temperature sensors does a 2019 Eclipse Cross have?

It typically includes an engine coolant temperature sensor, an intake air temperature sensing element (integrated with the manifold pressure sensor), a CVT fluid temperature sensor, and HVAC sensors such as ambient and evaporator temperature sensors. Exact count varies by trim and market equipment.

What are the signs the coolant temperature sensor is failing?

Owners often notice hard or rich cold starts, high idle, poor fuel economy, a fan that runs more than usual, and a temperature gauge that seems off. A scan tool will usually show an implausible coolant temperature reading and may log codes like P0115–P0119.

Can the CVT temperature sensor cause limp mode?

Yes. If the CVT fluid runs too hot or the sensor reports out‑of‑range values, the transmission control will limit ratio changes and power to protect itself. Check for cooling issues, fluid condition/level, and wiring integrity before condemning the sensor.