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Probably because it is over heating
run the fault codes to check for transmission problems
check oil level in the a/t
check coolant level in the radiator
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It means the oil is hotter than the coolant or you have a bad gauge or sender. Oil temp and coolant temp are very loosely related to each other. Coolant temp should remain within 10 degrees of thermostat temperature once warmed up. I think that has a 196 degree thermostat so the coolant should be no lower than 196 and no higher than 206, tho up to 220 is relatively normal if it's hot out and/or you're running it hard. Oil temp is loosely regulated if at all, as long as it's not above 250 sustained or 300 in short bursts you're fine. Much above that and there's a problem, but it would most likely be a bad reading. It's hard to over heat the oil unless you're on a race track.
Bad oil pressure sensor, oil pump, balancer-shaft bearings..
Which grade of oil did you use? Did you try to check the pressure with an oil-pressure gauge?
PO195 is oil temp sensor malfunction reason car has no power is a fail safe comp is getting oil temp false reading as a protection feature engine will run in safe mode oil temp reads normal range engine failure can result from oil temp very high that will cause the oil to boil and not be able to lubricate engine boiled oil is same as using water
if the engine temp is ok test the wire to oil sensor for power and ground for the switch if power ground replace the oil temp sensor
It should be listed in the owners manual, but because of different oil cooler setups you may have to do the change yourself and add oil until the correct level is established..... for the first oil change. Most likely 7 liters,but start with 5,run the engine to fill the oil filter,let it sit for 5 mins and recheck and fill to full. Note the amount needed for next time.
hi you would have an automatic i have a book manual and the a/t oil temp warns that the automatic transmission fluid temp too high.if it comes on while driving pull over and put the selector in p with engine idling wait till light goes off. if it doesnt contact toyota dealer. might be temp sensor.see how you go with this solution
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