As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE WHEEL STEERING ISSUE. DURING TAXI STRANGE NOISE WHEEL GRINDING NOISE AND CLUNKING NOISE AS WE TAXIED FASTER. FELT IT IN CABIN TOWED BACK TO GATE DFW. REMOVED ALL 4 HUBCAPS INSPECTED ALL 4 WHEEL SPEED TRANSDUCERS. INSTALLED HUBCAPS IAW AMM 32-49-02 NO DEFECTS FOUND. PERFORMED TAXI CHECK USING FIELD ANALYZER IAW AMM 32-41-00 NO DEFECTS NOTED NOISE OR CLUNKING NOISE DETECTED.