As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 255 - ORD - DURING TAKEOFF THE LEADING EDGE FLAPS NR 1/2 DID NOT INDICATE CORRECT POSITION FOR FLAP SETTING. AIRCRAFT WAS DIVERTED TO IND. MAINTENANCE PERSONNEL CLEANED DE-ICING FLUID RESIDUE FROM NR 1/5 LE FLAP CANNON PLUGS AND SWITCH ASSY. TESTED SWITCHES FOR CONTINUITY AND CHECKED OK. OPS CHECKED LE FLAPS GOOD. RETURN TO SERVICE.