Parts for your 2017 Mitsubishi Asx-Temperature sensors

2017 Mitsubishi ASX Temperature Sensors

Yes, temperature sensors are definitely used on the 2017 Mitsubishi ASX. Technical sources including the 2017 Mitsubishi ASX/RVR/Outlander Sport service manual (engine electrical and HVAC sections), the Mitsubishi ASA electronic parts catalogue, and Denso component specifications confirm multiple temperature sensors are fitted: engine coolant temperature (ECT), intake air temperature (IAT), ambient air temperature for the climate control, and transmission fluid temperature on CVT models.

These sensors quietly keep the ASX running sweet. The ECT tells the engine computer how warm the motor is so it can adjust fuel, ignition timing and idle, and kick the radiator fans in. The IAT helps trim fuelling based on air density. The ambient sensor feeds the A/C so cabin temps feel right, and the CVT fluid temp sensor helps protect the transmission by managing line pressure and shift strategy as the fluid heats up.

• Engine Coolant Temp (ECT): Cold starts, fan control, mixture and timing.
• Intake Air Temp (IAT): Corrects fuelling for hot/cold air, often integrated with the MAF on petrol models.
• Ambient/Interior Sensors: Climate control accuracy and compressor protection.
• CVT Fluid Temp: Thermal protection and driveability on Jatco CVT units.

There’s no fixed replacement interval for temperature sensors, but they should be checked during routine servicing. A scan tool reading that doesn’t match reality (e.g., showing 80°C after an overnight cold soak) is a giveaway. Typical fault codes include P0115–P0119 (ECT) and P0113/P0112 (IAT). Poor cold-start manners, high idle, black smoke, lazy radiator fans or erratic A/C performance are common clues.

• Inspect connectors and looms for corrosion, oil soak or broken clips.
• For ECT: Only remove when the engine is cool, catch and refill coolant, bleed air thoroughly.
• For IAT: If separate, clean only with MAF-safe cleaner, don’t touch the sensing element.
• For CVT: Diagnosis is via scan data, replacement usually requires pan access and correct refilling procedure.
• Refit with the specified O-ring/washer and torque, avoid sealants unless the manual specifies.

Using quality OEM-spec parts keeps readings accurate. After replacement, clear codes and perform a proper warm-up drive so the ECU relearns trims. With correct servicing and good cooling system health, ASX temperature sensors typically last for years.

Popular questions about 2017 Mitsubishi ASX temperature sensors

Where are the temperature sensors located on a 2017 ASX?
The ECT sensor sits on the engine’s coolant passage near the thermostat housing. The IAT is either built into the MAF sensor in the intake duct or mounted in the airbox. The ambient temp sensor is usually clipped in front of the radiator support, and the CVT fluid temp sensor lives inside the transmission valve body.

What are the signs of a failing coolant temperature sensor?
Hard cold starts, rich running, high idle, poor fuel economy, radiator fans stuck on or off, and a glowing check engine light are classic symptoms. Scan data that reads implausibly low or high compared with an infrared thermometer at the thermostat housing is a strong indicator.

Do temperature sensors need regular replacement?
Not on a schedule. They’re replaced when faulty. During services, it’s smart to compare scan readings to ambient temperature after an overnight sit, check wiring, and keep the cooling system fresh. Quality sensors aren’t expensive and can save a lot in fuel and wear.