You need a diagram of the transmission in your model vehicle for the exact location of the Turbine Speed Sensor .
The TSS is normally externally located and connected to the transmission body by a single bolt. The wiring has to be unclipped from the unit and once the bolt is removed you can remove the sensor unit from the transmission body.
Your vehicle is FWD so the sensor will most likely need to be accessed from one side. This will more than likely require you to remove a wheel and some of the inner guard moulding to get access.
You need to test for spark at a plug wire , check fuel pressure , have it hooked up to a diagnostic scan tool to have data parameters for crankshaft position sensors , cam sensor etc. Your looking for a definitive answer an there isn't one . Could be ignition related or fuel ,something electronic ,sensor etc... No Start Diagnostic Basics EricTheCarGuy
I'm sorry you replaced the parts without testing first. Codes only give mechanics a suggested area to test, not which components to replace.
Since you replaced the O2 sensor for the first two codes, a mechanic will need to check to see if it is working by reading the data flow from the sensor with a scanner while the engine is warming up. The catalytic converter will also need to be tested to troubleshoot code 431.
Code 455 is for a leak in the evap system which is what vents the gas tank to the vapor canister. The system will need to be pressure checked for leaks and then repaired.
Keep in mind, once the repairs are made and the codes erased, the car will need to be driven at least 100 miles in various conditions before you re-test.
You have a module issue, but which one, Throttle Position sensor, Throttle body, MAF, Crankshaft, or Camshaft, or a bad connection.
An auto electrician with a pro grade scan tool can diagnose.
https://www.google.com/search?q=mobile+auto+electrician+near+me
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can be something other than switch -----------http://mmc-manuals.ru/manuals/pajero_sport_iii/online/Service_Manual/2017/35/html/M135202550030702ENG.HTM
Well, you need 3 things for an engine to run; air, fuel and spark. Air from the air ducting through the air filter, the fuel from the pump usually in tank to fuel filters {pressurized} into the injectors for fuel. Spark is a bit trickier; you have a cam sensor, crank sensor, coil packs, spark plugs. There are more components in each of these 3 classes so unless you are familiar; it's best to take it to a mechanic.