Tune up

You have a random miss fire with the po300 that covers the other miss fire codes....P0300 TOYOTA - Random Cylinder Misfire Condition...Possible causes; Faulty spark plug (s), Faulty ignition coil (s), Clogged or faulty fuel injector (s), Intake air leak, Fuel injectors harness is open or shorted, Fuel Injectors circuit poor electrical connection, Ignition coils harness is open or shorted, Ignition coils circuit poor electrical connection, Insufficient cylinders compression, Incorrect fuel pressure...The P0300 code means that a cylinder(s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. If no leak are found the next step is to replace the spark plugs. If the problem persist more tests needs to be done to diagnose problem.......P1165 - Air/Fuel Ratio Sensor 1 Circuit Range/Performance...Possible causes; Air/Fuel Ratio Sensor 1 harness is open or shorted, Air/Fuel Ratio Sensor 1 circuit poor electrical connection, Faulty Air/Fuel Ratio Sensor 1.

Hello would you know an estimate

All depends on what it needs. I really don't know.