1995 chrysler concorde codes

I have a 1995 chrysler concorde that wont start.No spark.I turned the key on 3 times and i think the code sequence was 35455,what dose that mean?i think I read the codes wrong,i did the sequence again and it came up,12 5455,mdoes that make sense?

Code 54 is loss of cam sensor signal. With hall-effect sensor, I check ref voltage--ground and signal. Code 12 is loss of battery voltage at some point, code 55 is end of message.

so its saying the camshaft sensor is bad?What is hall-effect sensor?

The computer thinks there is a problem on that circuit. You might check the crank sensor also. Could be the sensor, could be the wiring circuit.