Really need help
 

So i have a 12 frs and its just been giving me a bunch of issues right now. Only one head light works and it has multiple codes they are :P0192 P0087 P0452 P2122 P2127 P0222 P0107 P0122 I've replaced the gas pedal and the throttle body and its and didnt drive it for a month so i just left the battery disconnected then started it and it worked fine drove it to my friends house and broke down on the way there and now its back on the same issue. When you start it the gas pedal doesnt work at all and it has a hesitation at idle and also the brake lights and blinkers dont work the running lights turn on but the hazards wont even turn on.

Pull the battery, take it somewhere and have it load tested.

Check the wiring in the car to see if a rodent got in and chewed some stuff up, because that is what it sounds like.

Too many codes relating to too many things at the same time, can't tell without knowing which DTC is active, which one is history and what the live data looks like. Sadly this isn't a job for a code reader and an internet forum, if you don't want to throw parts at it anymore, consult your local community for a trusted mechanic.

If you're willing to dive deep and learn, go here: https://demos.starbase7.net/t3Portal..._rm_index.html and navigate to 2013 FR-S > Engine/Hybrid System > FA20 Engine Control > SFI System. Find the codes you've got in that list and one by one, do the tests described. You'll find your thing eventually, you might need some basic tools and some coffee, but dig in your heels and you can make it.

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