FORD FUSION 2002, 1.4 tdci

Hello, so the problems began in August, one day all of a sudden EAC Fail appeared on my dash and the car has gone into limp mode., since then it did not dissapear, so i changed the maf sensor and the Pedal, nothing.

So yesterday i left the car in a parking space for 5 hours at night, when i came back to the car and i wanted to start it, it cranked but did not start, i looked at the fuel pump and i did not see anything weird, anyone please help me i looked at all the relays and all the fuses, still nothing, I called a tow truck and took it home, at home i looked again at the wiring and nothing seems weird, i don't know what to do and where to look at, please help me, someone who had the problem, i also want to tell you that i haven't seen the glowplug bulb on my dashboard for a long time, is this the problem?, Also i saw a bulb appear, a car with a lock near it on my dash, it appears for 1 second and then dissapear, is this maybe the chip in the key?, the central lock works as normal. I am so sorry for my bad english, it is not my main language. I also want to mention that when i plug the OBD , my phone and laptop connects to the OBD device, but it shows me that there is no connection to ECU, i unplugged him and plugged him back with no result, please help me, anyone, anything, 2002 fusion 1.4 tdci with 275000Km

Don't understand a lot of this but main and critical issue I spot is getting communication with all modules so this looks initially like a CAN fault (wiring?)
Only by sorting that can you access any fault codes, perhaps get the PCM working and then try to resolve the problems.

If that is indeed the starting point, I can only point you to:

This may help you to get communication

Welcome!

Hello, I want to make an update, I cleaned the fuel filter, unplugged and plugged in some connectors and now it runs, I'm gonna see what I can do about that obd