Where is located temperature transmission sensor on 2012 optima

Check behind catalityc counter.

code p0711 refers to transmission fluid temperature(TFT) sensor---range/performance problem===causes --Wiring ---TFT sensor
replace the sensor.

code p0711 refers to transmission fluid temperature (TFT) sensor--range/performance problem===causes--wiring TFT sensor
code p0713 refers to TFT sensor --high input--===causes --wiring short to positive--TFT sensor---ECM/TCM. If you can get to the TFT sensor, Then you can do it your self

more likely transmission fluid temperature sensor faulty.your transmission fluid could be low and transmission fluid could be old contaminated.

Fix the two codes, and it might stop that occasional revving.
1404 is a malfunctioning EGR valve (exhaust gas recirculation). That code specifically says the pintle is stuck open. This is usually caused by carbon deposits around the lower part of the valve. It will have to be taken off for cleaning or replacement. Use a knife blade or scraper to clean it. The pintle is like a pin on the bottom that raises (valve open) and lowers (valve closed) by vacuum applied to the valve. To remove the valve, remove the small exhaust tube attached to it. Valve is bolted to intake manifold by two screws with a gasket below it. When off, check the passages beneath it for exhaust deposits plugging the passages- if you see a lot, scrape or clean them out as best you can. EGR valves should not be very expensive. If you are unsure yours is good after trying to clean it, you may want to replace it-make sure you get a new gasket with the new one. If the old gasket got broken taking it off, buy a new gasket for it.
The code P0711 is for the transmission fluid temperature sensor. Sensor circuit range/performance is all it says. Apparently poor performance of the sensor or circuit as sensed by the computer. Try a new sensor, I would say. I don't know how or if it should be tested.
Good luck.

P0700 Transmission Control System

P0701 Transmission Control System Range/Performance

P0702 Transmission Control System -Electrical

P0703 Torque Converter/Brake Switch B Circuit

P0704 Clutch Pedal Position Switch -Circuit Malfunction

P0705 Transmission Range Sensor/Switch Circuit Malfunction (PRNDL Input)

P0706 Transmission Range Sensor/Switch Circuit Range/Performance

P0707 Transmission Range Sensor/Switch Circuit Low Input

P0708 Transmission Range Sensor/Switch Circuit High Input

P0709 Transmission Range Sensor/Switch Circuit intermittent

P0710 Transmission Fluid Temperature Sensor Circuit

P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance

P0712 Transmission Fluid Temperature Sensor Circuit Low Input

P0713 Transmission Fluid Temperature Sensor Circuit High Input

P0714 Transmission Fluid Temperature Sensor Circuit Intermittent

P0715 Input/Turbine Speed Sensor Circuit

P0716 input/Turbine Speed Sensor Circuit Range/Performance

P0717 Input/Turbine Speed Sensor Circuit No Signal

P0718 Input/Turbine Speed Sensor Circuit Intermittent

P0719 Torque Converter/Brake Switch B Circuit Low

P0720 Output Shaft Speed Sensor Circuit

P0721 Output Shaft Speed Sensor Circuit Range/Performance

P0722 Output Shaft Speed Sensor Circuit No Signal

P0723 Output Shaft Speed Sensor Circuit Intermittent

P0724 Torque Converter/Brake Switch B Circuit High

P0725 Engine RPM Input Circuit

P0726 Engine RPM Input Circuit Range/Performance

P0727 Engine RPM Input Circuit No Signal

P0728 Engine RPM Input Circuit Intermittent

P0729 Gear 6 Incorrect Ratio

P0730 Incorrect Gear Ratio

P0731 Gear 1 Incorrect Ratio

P0732 Gear 2 Incorrect Ratio

P0733 Gear 3 Incorrect Ratio

P0734 Gear 4 Incorrect Ratio

P0735 Gear 5 Incorrect Ratio

P0736 Reverse Incorrect Ratio

P0737 TCM Engine Speed Output Circuit

P0738 TCM Engine Speed Output Circuit Low

P0739 TCM Engine Speed Output Circuit High

P0740 Torque Converter Clutch Solenoid Circuit

P0741 Torque Converter Clutch Solenoid Circuit Performance or Stuck Off

P0742 Torque Converter Clutch Solenoid Circuit Stuck On
P0743 Torque Converter Clutch Solenoid Circuit Electrical
Now i dont know a lot about automatics especially modern ones with all this fancy electronics thats used nowdays but i think its a fault with the temperature sensor for the gearbox.But where its located and what it looks like i have no idea it could even be mounted inside the gearbox .Sorry not a very good answer from a mechanic but?? very few of our europeon cars come with auto transmission .Evan when i do know whats wrong i cannot buy the parts for the gearbox as only re-con boxes supplied by the dealer so best advice is to try a specialist in auto box repairs only .PS some of my best students when i used to teach mechanics many moons ago were the girls so no excuses like iam only a girl please

0711- trans temp sensor 1281- injection pump mis calibration

Grab the top radiator hose, follow it to the engine, where it meets the engine is where the sensor is.

P0711 - A/T temperature sensor - rationality check
This sensor has gone bad... replace it after you have verified there is no wiring problem between it and the ECU.

P1134 - Oxygen Sensor Circuit Malfunction (No Activity) P2300 - no such code, B1000 - no such code, P0711 - Transaxle Fluid Temperature Sensor Rationality Go to www.hmaservice.com and register( Vehicle by VIN). Afterward, you have access to shop manuals, service bulletins, wiring diagrams, etc. about your vehicle.