park the car start the engine open the radiator cap and let engine idle. wait for fans to start
check the radiator collar for circulating coolant. if it is circulating cooling system is good if there is no coolant movement in radiator either the pump is corroded and causing low flow or the t/stat valve is malfucntioning ... replace oem new.
cvt transmission fluid level low can also trigger check engine lamp
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when did you changed the CVT oil in transmission ? check for transmission oil level if odometer reading is over 55000 km change the transmission fluid measure the quantity drained. you may need ove 2.75- 3.0 liters of CVT fluid to top up the transmission after drain.