As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT, THE RIGHT COWL ANTI ICE LIGHT ILLUMINATED INTERMITTENTLY. THEN CONTINUOUS AT FL 230. FOLLOWED QRH PROCEDURES, NO HELP. LIGHT STAYED ON AT IDLE THRUST. FLIGHT RETURNED TO DEPARTURE, NO EMERGENCY WAS DECLARED, FLIGHT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS GROUNDED. REPLACED THE NR 2 ENG NOSE COWL ANTI-ICE PRESSURE SENSOR IAW AMM 30-21-21.