What was found
AFTER PARKING AT GATE (ABOUT 10 MINS AFTER PARK BRAKE SET) MASTER CAUTION ENG 1 NO DISPATCH MESSAGE APPEARED WITH CYAN MESSAGE ENG 1 NO DISPATCH. REMOVED FROM SERVICE. C/W FIM TASK 73-21-00-810-82C-A, FOUND ENG FAULT CODES 6117. PREFORMED FHDB DOWNLOAD PER AMM TASK 45-45-00-970-801-A, SUBMTTED TO ENGINEERNG. REMOVED #1 FADEC IAW E175 AMM TASK 73-21-01-000-801-A. INSTALLED #1 FADEC IAW AMM TASK 73-21-01-400-801-A, STEP 1-8 (A-I). STEP (K) STILL NEEDS TO BE ACCOMPLISHED. VERIFIED EICAS, ENG 1 NO DISPATCH CLEARED. OLD FADEC P/N 4120T00P60, S/N LMDBG304. NEW FADEC P/N 4120T00P60, S/N LMDAG970. CLEARED CODES AND C/W E175 AMM 73-21-01-400-801-A STEP (K-N) OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.