Limp mode

[Graeme]

Hi, looking for a bit of advice, I have a 2012 honda accord, the car recently wouldn't start, got the car started after a battery reset but the dash it full of faults, the car is stuck in limp mode, tried a replacement ECU & instrument cluster but still the same, been told could be gearbox pressure sensor, does this sound right, any help would be appreciated, thanks

[AVC]

Might be a good idea to put the original parts back on and get a professional code reader and see what is stored. Check live data against any pending/permanent codes listed.