take it to the dealer we charge £50 for it, but ask for goodwill cause your car being an 07 and 60k on it. the £50 quid is for a master tech to spend 1 hour on your with ids.

your light is not for tcm like oldford says thats a diff light for cars with auto boxs.

i had fixed a car with the same probs, the car was watching 2 codes for the egr
the watching code dont show on the dash only hard codes do
so i changed the egr after fitting the egr took it for a spin and the light came on which is on yours, that light was kicking off for the glow plug relay saying that there was a error in calration i fone ford they wear like errrrrrrrrr. so i clone the pcm of than other fiesta light went and did not come back then ford done a tsb 2 weeks later saying about the glow plug relay fiestas have coms error when the pcm is self learning brings that light on and telling us to update the pcm with there new software

sorry this is so long