As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTING "L ENG EEC MODE" DISPLAYED ON TAXI OUT. RTN TO GATE LT ENG EICAS MESSAGE, PIMU BITE SHOWS "P2T2 PROBE HT" ON BOTH CHANNELS. ACCOMPLISHED TROUBLE SHOOTING PER 71. PIMU MSG INDEX FOR MESSAGE 350-24. REPLACED PT2-TT2 PROBE PER MM. INSTALLED 2ND PROBE PER MM, ACCOMPLISHED ENG GROUND RUN X2 ALL OPS & INDICATIONS NOW OK.