It's the other engine still running? It's somewhere written that you shouldn't switch either FADEC off with an engine running so don't loose cross talk capabilitie...... Not written exactlyin this words, but generally idea, not enough time seating in one
On OEI conditoon, after safe engine shutdown (of "failed" engine), both FADEC stay in ON position, by the same reason....
Know of a problem in one FADEC (Eng 1 Fadec MInor), that was "only" a cable connection problem to the other engine (Eng 2) - lot's of "crosstalk" going on