2022 Honda Accord forward collision avoidance problems

I was driving approximately 30 miles an hour with my foot on the accelerator when the automatic braking stoped the car dead. The automatic brake message flashed on the dashboard at that time. There were no cars or anything in front of me on the road. I was then rear ended by the car behind me. The car was taken to a collision shop, and there was a scan done on the car. There have been no other inspections of the cars braking system as far as I know. The problem was reported to my insurance company, Geico.

Woke up and started my car, all the lights were on including engine light. no adapter cruise, steering light was on. Screen also was saying avoid speeding. Every notification was telling me go to the dealer ship. I took it Howdy Honda in Texas and they said we will need to do a diagnostic and it was for 255 for to see what the problem was. They looked and said I had code for po172(rich) and misfire on p0301 told me I need to replace fuel injectors. Which cost 1933$.