Po300 multiple cylinder misfire po705 transfer case circuit malfunction

po300=multiple cylinder misfire,,is that the only on code,

po200 is injector circuit malfunction,po300 is random/multiple cylinder misfire,po443 is evaporative emission control system purge control valve circuit malfunction.

change the coils but most likely a bad ecu

When the car does this , turn engine off and unplug mass airflow sensor , if clears up replace sensor.

PO300 IS THE GENERIC CODE FOR AN UNIDENTIFIED ENGINE MISFIRE. iT COULD BE CAUSED BY A SINGLE OR MULTIPLE CYLINDERS. BUT THE FREQUENCY OF THE MISFIRE IS NOT SUFFICIENT FOR THE MONITOR TO PINPOINT. POSSIBLE CAUSES CAN BE LARGE VACUUM LEAKS, EGR LEAKAGE INTO THE INTAKE MANIFOLD, EGR PASSAGE RESTRICTIONS, LOW FUEL PRESSURE, DIRTY FUEL INJECTORS, IGNITION COIL MALFUNCTIONS.
HOPE YOU FIND THIS USEFUL. HAVE A GOOD DAY.

300 is multiple cylinder misfire, 420 is catilytic convertor no good and 446 is an evap problem

p0300 is usually a random cylinder miss-fire code, and i think that p0117 is coolant temperature sensor? Try replacing the sensor, could also be the reason for the other code, as a malfunctioning coolant temp sensor will affect engine timing.

Given that most of the trouble codes are for the O2 sensor, I think I would change it. The multiple misfires could be because of improper fuel/air mixture caused by a bad sensor. Disconnect the negative(-) battery terminal then change the sensor. Disconnecting the negative(-) should reset the computer and allow the fuel/air mixture to return to default allowing the engine to start.
P0130 - O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
P0134 - O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0135 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0300 - Random/Multiple Cylinder Misfire Detected

These are cylinder misfire codes meaning ;
P-0300 = RANDOM OR MULTIPLE MISFIRE
P-0302 =CYLINDER #2 MISFIRE
P-0305 =CYLINDER #5 MISFIRE
Check spark plugs, wires, and coil(s)

P0300 Multiple Cylinder Misfire Detected

P0306 Cylinder 6 Misfire Detected

P0451 EVAP Pressure Sensor Range/Performance

I have no idea what those last two are. Typo, maybe?

Your first two codes could be caused by old spark plugs and/or leaking plug wires.

Your EVAP code could be a bad fuel tank pressure sensor or a malfunctioning EVAP system. With that code, if you remove your fuel cap and get a whoosing sound, then it is an issue with your EVAP system not properly venting the tank. If you don't get that sound, then the tank pressure sensor is bad.