As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAXIING ABOUT TWO MILES, WITH MULTIPLE TURNS, SOMETHING IN THE STEERING BROKE. USE OF THE RUDDER AND DIFFERENTIAL BREAKING TO PULL OFF THE TAXIWAY. AIRCRAFT WAS TOWED BACK TO THE FBO. MAINTENANCE REPLACED STEERING TILLER PIN. OPS AND TAXI CHECKS PERFORMED WITH NO DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE.