Parts for your 2016 Mitsubishi Lancer-Temperature sensors

2016 Mitsubishi Lancer Temperature Sensors — What They Do and How to Look After Them

Temperature sensors are absolutely fitted to the 2016 Mitsubishi Lancer. OEM technical references including the Mitsubishi Motors Lancer (CF series, 2015–2017 MY) Service Manual — Engine Electrical and Cooling sections, CVT diagnostics, and HVAC chapters — along with the Mitsubishi ASA parts catalogue and MUT-III diagnostic data confirm use of multiple temperature sensors: engine coolant temperature (ECT), intake air temperature (IAT), ambient/outside air temperature, A/C evaporator temperature, and CVT fluid temperature where fitted.

On a 2016 Lancer, temperature sensors quietly make everything run sweet under the bonnet. The ECT sensor tells the engine computer how warm the engine is so it can sort cold-start fuelling, ignition timing, idle speed and when to kick the radiator fans on. The IAT sensor helps trim fuelling as outside conditions change, while the ambient and evaporator sensors let the climate control keep the cabin comfy without fogging or freezing the evaporator. CVT models also watch transmission fluid temperature to protect the unit and deliver smooth ratio changes.

There’s no fixed replacement interval for these sensors, they’re usually a replace-on-failure item. As part of regular servicing, a quick health check with a scan tool is smart: confirm the ECT and IAT read close to ambient before first start, then watch the ECT climb smoothly as the engine warms. After coolant changes, bleed the system properly — air pockets can trick the ECT and cause odd fan behaviour. Keep coolant fresh to reduce corrosion at the sensor tip and inspect wiring and connectors for green crust, oil wicking or chafing.

When a sensor does go out of spec, the Lancer’s ECU will often throw a code (typical sets include P0115–P0119 for ECT, P0110–P0114 for IAT, P0070–P0073 for ambient, P0711 for CVT fluid). Genuine or quality aftermarket replacements are recommended. Fit to a cool engine, use the correct sealing method and torque if threaded, top up and bleed coolant if the ECT was changed, clear codes and confirm values on a road test.

• Common clues: hard cold starts, high fuel use, rough idle, cooling fans running constantly, A/C not engaging or icing, temp gauge misbehaving.
• Good habits: keep connectors clean and latched, avoid spraying harsh cleaners on the IAT/MAF area, and don’t ignore warning lights.

Popular questions about 2016 Mitsubishi Lancer temperature sensors

Where is the engine coolant temperature (ECT) sensor on a 2016 Lancer?
It’s typically threaded into the thermostat housing or cylinder head coolant passage on the 4-cylinder engine. From above, look near the upper radiator hose connection. A two‑pin plug and a small, brass-bodied sensor are the giveaway. Access is usually straightforward with basic hand tools on a cold engine.

Do temperature sensors need routine replacement?
No — they’re service-checked, not scheduled for replacement. If scan data looks sensible, there are no fault codes and the engine behaves, leave them be. Replace only when readings are erratic, out of range, or a related code sets after proper diagnosis.

Can a bad temperature sensor cause rough running or high fuel use?
Yes. If the ECT reads cold all the time, the ECU enriches the mixture and bumps idle, which can chew through fuel and foul plugs. If it reads hot too early, it can lean things out and cause drivability issues. Verifying sensor values against actual temperatures with a scan tool is the quickest path to the right fix.