As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT WAS GROUNDED. AIRCRAFT EXPERIENCED A CABIN ODOR EVENT ON FLIGHT 1867 INTO CLT. DESCENDING INTO CLT SMELLS LIKE CAR EXHAUST FUMES. FUMES CAME AND WENT AND STOPPED ON FINAL APPROACH 36C. PERFORMED J/C 26L00021001 - SMOKE ODOR FUMES INITIAL TROUBLE SHOOTING AND FOUND NO ODOR PRESENT DURING APU AND ENGINE RUNS. OK FOR SERVICE.