What was found
DURING TAXI OUT, E & E ACCESS DOOR EICAS MSG ILLUMINATED. AIRCRAFT RETURNED TO BLOCKS (BTB). MAINTENANCE DEFERRED IAW ABX-52-71-1-1. VERIFIED E/E ACCESS DOOR CLOSED LATCHED AND LOCKED PRIOR TO FLIGHT IAW ABX MEL 52-71-1-1. T/S IAW FIM 32-09 FT. 803. CLEANED SENSOR AND REMOVED FOD FROM DOOR MATING SURFACES. OPS CHECK GOOD. NO REACTIVATION PROCEDURES REQ. DI CLEARED. AIRCRAFT RETURNED TO SERVICE.