Parts for your 2023 Mitsubishi Eclipse cross-Temperature sensors

2023 Mitsubishi Eclipse Cross Temperature Sensors

Temperature sensors are absolutely used on the 2023 Mitsubishi Eclipse Cross. Factory documentation and tech references – including the Mitsubishi Motors Workshop Manual (engine management and HVAC sections), OBD-II DTC listings for the 1.5L turbo/CVT, and dealer parts catalogues – all show multiple temperature sensors fitted. These include an engine coolant temperature (ECT) sensor, intake air temperature (IAT) sensing, ambient air temperature for climate control, an evaporator temperature sensor, and a transmission fluid temperature sensor on CVT models. On Plug-in Hybrid EV variants, the high-voltage battery pack also uses dedicated temperature sensing for thermal management.

What do they all do? In short, they help the car think clearly. The ECT tells the engine computer when the motor’s cold or hot so it can fine-tune fuel, ignition, idle and cooling fan operation. IAT helps with fuelling under different weather conditions. The ambient and evaporator sensors keep the air-con comfortable without icing the system. The CVT fluid temperature sensor protects the transmission and manages shift behaviour. PHEV battery sensors safeguard the battery and manage cooling/heating for range and longevity.

• Common signs of trouble: hard cold starts, rich running, the temp gauge acting odd, cooling fans running constantly, poor fuel economy, weak A/C, CVT overheat warnings, or fault codes like P0115–P0119 (ECT), P0110–P0114 (IAT), P0070–P0074 (ambient), or P0711 (CVT temp).
• Quick checks during servicing: scan live data with the engine stone-cold — ECT and ambient should match local temperature, then climb smoothly to about 85–95°C as it warms. Inspect connectors for corrosion, coolant wicking at the ECT, and damaged harnesses near the radiator support.

Replacement isn’t on a fixed schedule, sensors are changed when faulty. ECT sensors are usually a simple swap with a coolant bleed. IAT may be integrated with the MAF/MAP, so confirm the part before ordering. Ambient and evaporator sensors are small and tucked into grilles/ HVAC cases — access varies by trim. The CVT temperature sensor can be part of the valve body, that’s a more involved job and best left to a transmission specialist. For PHEV battery temperature sensors, only high-voltage–qualified technicians should diagnose and repair.

Pro tip: use genuine or quality OEM-equivalent sensors, keep cooling system health in check (fresh coolant, no airlocks), and always clear codes and verify live data after any replacement. That’ll keep the Eclipse Cross behaving itself across Aussie and Kiwi climates.

FAQs

Does the 2023 Eclipse Cross have more than one temperature sensor?
Yes. Beyond the engine coolant sensor, there’s intake air, ambient air, A/C evaporator, and a CVT fluid temperature sensor on automatic models. PHEV versions add battery temperature sensing. Each one feeds data to different control modules to keep performance, comfort and reliability on point.

What are the signs the coolant temperature sensor is failing?
Look for hard cold starts, rough idle, high fuel use, fans running when they shouldn’t, or the temp gauge misbehaving. A scan tool may show codes like P0115–P0119 or unrealistic temperature readings that don’t match the actual ambient when the engine is cold.

Do PHEV models need special attention for temperature sensors?
The usual engine and climate sensors apply, but the high-voltage battery’s temperature management is critical. Diagnosis and repair of battery-related sensors must be done by HV-trained technicians with the right safety gear. Owners should keep cooling systems maintained and follow dealer service guidance.