Parts for your 2014 Toyota Wish-Temperature sensors

2014 Toyota Wish temperature sensors — what they do and how to look after them

Temperature sensors absolutely are used on the 2014 Toyota Wish. Technical references such as Toyota’s New Car Features guide for the ZR engines, the Toyota Repair Manual for the ZGE2# series Wish (covering 2ZR-FAE and 3ZR-FAE), and Toyota’s Electronic Parts Catalogue outline multiple temp sensors on this model: an engine coolant temperature (ECT) sensor on the water outlet, an intake air temperature (IAT) sensor (integrated into the DENSO mass air flow sensor), an ambient air temperature sensor ahead of the radiator support, a CVT fluid temperature sensor inside the transmission, and an evaporator temperature sensor in the HVAC. So, yes — temperature sensors are an essential part of how the 2014 Wish runs and keeps its cool.

On this Wish, temp sensors help the ECU trim fuel, ignition, and idle, protect the engine and CVT from overheating, and keep the air-con behaving. If the ECT or IAT reads off, you’ll often notice hard starting, rich running, average fuel economy, the cooling fans going troppo, or the air-con cutting out.

There’s no set replacement interval for the sensors themselves, but they’re easy to check during routine servicing. A quick OBD-II scan with live data will tell the story: when cold, ECT should be close to ambient and then stabilise around 85–95 °C once warmed up. IAT should read near outside air temp when first started. If a reading looks wonky, or you’re seeing codes like P0115–P0119 (ECT) or P0110/P0113 (IAT), plan a closer look.

• Keep connectors clean and clipped firmly, inspect them every 20,000 km.
• Use the correct Toyota Super Long Life Coolant (pink, premixed) to protect the ECT sensor from corrosion.
• Avoid unplugging sensors with the ignition on, you can spike a fault and upset trims.

Replacing the ECT sensor is straightforward if needed: let the engine cool fully, relieve any cooling-system pressure, disconnect the plug, and remove the sensor with a deep socket. Fit a new O-ring, lightly coat threads if specified, and tighten to the torque in the Toyota manual (typically around 20 N·m for many Toyota ECT sensors — verify for your engine). Top up with the correct coolant and bleed the system to clear air. For the IAT on this model, replacement usually means swapping the MAF assembly, keep the airbox sealed and the filter fresh to protect it.

Look after the basics and these sensors will quietly get on with the job for hundreds of thousands of kilometres.

Popular questions about 2014 Toyota Wish temperature sensors

Where is the engine coolant temperature sensor on a 2014 Toyota Wish?
It’s mounted on the engine’s water outlet housing near the thermostat, facing the front of the engine bay on the ZR-series engines. You’ll see a small two-pin connector on the sensor body. Access is usually from the top with the intake ducting out of the way.

Does the 2014 Wish have a separate intake air temperature sensor?
Yes, but it’s built into the DENSO mass air flow (MAF) sensor on the air cleaner outlet. If the IAT fails, the fix is typically to replace the MAF unit. Make sure the air filter and ducting are sealed properly to avoid skewed readings.

What fault codes point to a dodgy temperature sensor on this model?
Common ones are P0115–P0119 for the ECT circuit/performance and P0110/P0113/P0112 for the IAT. Over in the transmission, CVT temperature issues may flag codes related to fluid temperature or performance, and the car can drop into a protective mode if temps go out of range.