Parts for your 2014 Mitsubishi Asx-Temperature sensors

2014 Mitsubishi ASX Temperature Sensors — What They Do and When to Replace Them

Yes, temperature-sensors are absolutely used on the 2014 Mitsubishi ASX. Technical references including the Mitsubishi ASX/RVR/Outlander Sport factory service manual (Engine Controls group), the Mitsubishi electrical wiring manual, and the Jatco JF011E CVT service information confirm multiple temperature sensors on this model: an Engine Coolant Temperature (ECT) sensor, an Intake Air Temperature (IAT) sensor (integrated with the MAF on most 4B1 petrol engines), a transmission fluid temperature sensor for CVT models, and HVAC/ambient temperature sensors for the dash display and climate control. These sensors feed the ECU and body systems critical data to manage fuelling, ignition timing, idle speed, radiator fan operation, CVT shift strategy, and cabin comfort.

On a 2014 ASX, the ECT sensor is the real MVP. It tells the ECU how warm the engine is so it can run sweet from cold start through to normal operating temp, usually around the high-80s to mid-90s °C. If the ECT signal is dodgy, drivers might cop rough cold starts, high fuel use, lazy performance, thermo fans that run at weird times, or a check engine light with codes like P0115–P0119.

These sensors aren’t a scheduled replacement item, but they do benefit from a bit of attention during servicing:

• Scan tool check: Look at live data with the engine stone cold — coolant and intake temps should be close to ambient. At operating temp, expect coolant around 85–95 °C and fans cycling as designed.
• Cooling system care: Fresh coolant at the right mix, no air pockets, and clean connectors go a long way to keeping the ECT happy.
• Airbox/MAF: Make sure the MAF/IAT plug is seated after air filter changes. An unplugged IAT will make it run rich as.
• CVT owners: Correct CVT fluid level and condition help the trans temp sensor report accurately and protect the belt and pulleys.

Replacement of the ECT sensor is straightforward for a pro and a tidy DIYer with a torque wrench. Let the engine cool, relieve pressure, drain a little coolant below sensor level, disconnect the plug, remove the sensor with a deep socket, then install the new unit with the correct seal and torque per the service manual. Refill, bleed, and verify readings on a scan tool. Always fix any wiring corrosion or damaged connectors to avoid repeat faults.

Bottom line: the ASX relies on its temperature-sensors to stay efficient, reliable, and safe in Aussie and Kiwi conditions. If there are starting quirks, fan oddities, or a CEL, a quick data check of the temp signals will usually point the way.

Popular questions about 2014 Mitsubishi ASX temperature-sensors

Where is the engine coolant temperature (ECT) sensor on a 2014 ASX?

On most 4B1 petrol engines, the ECT sensor threads into the thermostat housing area near the top radiator hose outlet. It’s a two-wire thermistor. Access is usually from the top with the air intake duct removed. Always verify with the service manual for your exact engine variant.

What symptoms point to a bad temperature sensor on an ASX?

Common signs include hard cold starts, rich running or high fuel use, erratic idle, cooling fans running constantly or not cutting in, poor heater performance, and a check engine light with coolant or intake temp codes. Live data that doesn’t match ambient when cold is a giveaway.

Do temperature-sensors need routine replacement?

No, they’re not consumables. They’re replaced when faulty or contaminated, or if the connector or wiring has failed. Keeping coolant fresh, filters clean, and connectors protected often sees them last the life of the vehicle.