As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENGINE "COWL VALVE OPEN" LIGHT ILLUMINATED BRIGHT BLUE AND AMBER "TAI" ON ENGINE DISPLAY AFTER TURNING ENGINE ANTI-ICE OFF ON APPROACH. GROUNDED - YES. PERFORMED ENGINE COWL ANTI-ICE OPERATIONAL TEST. CYCLED ENGINE ANTI-ICE SEVERAL TIMES WITH NORMAL INDICATIONS. TEST PASS. NO HISTORY. REF AMM 30-21-00.