As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CENTRE PITOT PROBE HEAT EICAS MESSAGE DISPLAYED. ACFT RETURNED TO GATE FOR RESOLUTION. PERFORMED TEST IAW AMM 30 -31-00. AMM TEST FAILED, DIRECTING TO FIM 30-36122 ONE EACH K30316 & ONE EACH K30315. RETESTED IAW AMM 30-31-00-700-802. TEST PASSED. SYS WORKING, NO FAULT MESSAGES.