As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DIVERSION TO JFK AT 15000FT SMOKE AND FUMES DEVELOPED IN THE COCKPIT. ACCOMPLISHED A/C SMOKE ABNORMAL C/L. SMOKE DISSIPATED AFTER CLOSING NR 4 ENGINE BLEED VALVE. REMOVED AND REPLACED EVC ACTUATOR AND FCU. OPERATIONAL CHECKS GOOD. ALL FOLLOW-ON MAINTENANCE DEEMED ADEQUATE.