As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED DUE TO SMOKE IN THE COCKPIT. SMELL DISSIPATED SLIGHTLY. SMELL MOS NOTICABLE ON 1ST OFFICERS SIDE AND LATER ALONG UPPER CIRCUIT BREAKER PANEL. FOUND NR 1 FLIGHT DECK EQUIPMENT COOLING FAN TO BE SOURCE OF SMELL. R/R IAW MM 21-58-23-4 SYSTEM OPS CK NORMAL