What was found
RIGHT ENGINE CONTROL EICAS MESSAGE AFTER PUSHBACK FROM GATE AFTER ENGINE START, ACFT RETURNED TO GATE (BTB), AND MTX GROUNDED ACFT, MTX TROUBLESHOT & PERFORMED BIT PROCEDURE ON RH PIMU. FOUND SENSOR T25 FAULTING. R & R T25 CIT SENSOR ON RT ENGINE IAW FIM 73-21-00 & AMM 73-21-01 .OPS CHECKED GOOD PER TEST 11 OF AMM 71-00-00, ACFT RELEASED ETOPS 180, & RETURNED TO SERVICE.