As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PUSHBACK, TRACTOR WENT INTO PROTECTION MODE, DURING TURN ACFT WENT BTB FOR AN INSPECTION MTX GROUNDED ACFT AND INSPECTED NOSE LANDING GEAR C/W PHASE 1 INSPECTION IAW AMM 05-51-29, NO DEFECTS WERE NOTED AND RETURNED ACFT FOR SERVICE .