Civic not starting

I have a 91 honda civic 4dr with a 1.5 litre engine, also with an automatic transmission. I just droped a new engine in it the same kind I descrided above and it worked find for a couple of months then one morning I tired starting it and it turned over continuously but would not start. According to the blinking light on my computer it is saying my fuel injector is the problem but I find it hard to believe that it would suddenly go bad to the point where it would suddenly not start. I am not sure what is going on could anyone help or give any sugestions?

check if you are getting spark and fuel, then check the main relay too

I am going to go with main relay also. Another note, my bf car was doing the same thing (the day he bought his ZC) the funny thing is that I told him to check the rotor button and make sure it wasn't coming off. He said "it can't be that" So we go and buy a whole new motor and when they broke the engine down 2 days later, guess what was wrong, THE ROTOR BUTTON. LOL so he spent money on a new engine for nothing. Although it turned out to be a good thing. He was getting that same code. I don't know why he was getting that code but thats why he didn't think it was the rotor button. Just a thought for you and a reason to tell my story.

check injector plugs...wire could've snapped or plug could've came loose...common problem on those dx motors...