As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG 2, 1 FIRE BOTTLE A FAIL MESSAGE ON EICAS. MESSAGE CAME ON FOR A FEW SECONDS THEN OFF, THEN ON PERMANENTLY. REMOVED FROM SERVICE. ACCOMPLISHED FIM TASK 26-21-00-810-809-A UP TO STEP 6(2). FAIL MESSAGE STILL PRESENT. REPLACED ENGINE FIRE EXTINGUISHING BOTTLE "A" IAW E175 AMM TASK 26-1-03-000-801-A/400-801-A. ALL OPS TESTS PASSED. ALL EICAS MESSAGES DID NOT RETURN. RETURNED TO SERVICE.