As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB - ON CLIMB-OUT TURNED ON WING ANTI-ICE, GOT RED NR 1 MANIFOLD LIGHT. STEM THEN ISOLATED BLEED SYS 1. GOT LEVEL 2 "WING A/I L DISAGREE". ATB DUE TO ICING CONDITIONS. T/S PER FIM 30-11-00-1 AND 36-11 00 FIG 103 BLOCK 13. REMOVED AND REPLACED LEFT A/I DIF SENSOR PER MM 30-11-02-4. NR 1 PSC PERFORMED HI-PWR ENG RUN AT 90 PERCENT N1, A/C IN FLT MODE. A/I SYS CK'D OK. DUCT PRESS 44 PSI. NO FAULTS INDICATED.