As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DE-ICING, THE LT ENGINE BLEED OFF EICAS MESSAGE AND LT ENGINE BLEED SWITCH OFF LIGHT ILLUMINATED AND WILL NOT EXTINGUISH. RAN THE ENGINE IAW AMM 71-00-00, CYCLED LEFT BLEED SWITCH AND CIRCUIT BREAKER. LEFT ENGINE BLEED OK. REMOVED AND REPLACED THE NR 1 ENGINE HIGH PRESSURE CONTROLLER IAW AMM 36-11-08, OPS & LEAK CHECKED GOOD. REMOVED AND REPLACED THE NR 1 ENGINE HPV IAW AMM 36-11-07, LEAK AND OPS CHECKED SATISFACTORY.