rtmtl

i have an accord 05 2.4l A/T for almost 1 year and a half and it always started even in very cold weather.this winter a remote starter were installed and that work for few times and then only crank but no start with the remote but i was able to stert it with the key(GREY KEY) the only one i got with the car.The technician that installed it told me that the problem was the key ,he need the black key to to be collected for a bypass or data link something like that than he decided to connect it directly without the bypass and it worked fine 2 weeks not problems at all but suddenly it didnt start it crank but no start i call the towing to bringht it home.The day after it started and i use it during the day but the next day no start again only crank. i got this code PO685 ECM/PCM power relay control circuit/open. Please help me.Thank you in advance.