Possible fuel injectors replacement

Yes it does because to evaluate the catalyst the engine needs to be running at stoichiometric ratio, (or normal fuel ratio in other words). You need to then evaluate the front vs rear oxygen sensor and catalyst monitors for proper operation, meaning the rear sensors (after cat) will need to be stable at .4-.6 volts. If they mirror the front (pre-catalytic converter) sensors and are switching from 0 to 1 volt like the pre-catalytic converter sensors,then the catalytic converter/s are bad. Excess fuel in the exhaust will cause the catalyst to overheat and crack the internal honeycomb structure and the material that it is made of. Here is a guide that will explain it further: https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Yes it is. I've seen catalyst get replaced only to go bad in a matter of minutes because a coil failed. Catalyst manufacturers often times will give a disclaimer that they will not warranty their catalytic converters if the vehicle has any driveability symptoms. But yours might be in good shape after the repair is done! I hope it turns out for the best!

Hello,

Direct Trouble Code[DTC] P0301 is a misfire in cylinder 1, DTC P0316 is for a misfire detected on startup[first 1000 revolutions], and I can't find DTC P00c00 anywhere on the list of DTC's for your vehicle. Is your vehicle's engine the turbo model?

Thanks,
Alex
2CarPros

The Eco-Boost would be the turbo version. That is where they get the boost from. It's a small displacement engine with the turbocharger forcing it to act like a larger engine.
It could be a faulty injector, however it could also be a failing fuel pump.
P00c6-00 is a code for low fuel pressure while the engine is cranking. It can cause misfires and could easily cause the codes you have. The fuel smell could be a leak which caused the low pressure as well possibly at the cylinder 1 injector.

With these details in place I can see the possibility of a failed fuel injector! The low pressure code can set if an injector gets hung open and the flashing check engine light is due to the type A misfire. The light flashed anytime there is a possibility for catalyst damage.