As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR WOULD NOT RETRACT. LG FAIL AIR/GRD FAIL IC 1-2 INOP CAUTION MESSAGES DISPLAYED. AIRCRAFT RETURNED TO FIELD. MAINTENANCE REMOVED AND REPLACED LT WEIGHT ON WHEELS PROXIMITY SENSOR, ADJUSTED RT AND LT MLG PROXIMITY SENSORS, AND C/W LANDING GEAR FUNCTIONAL CHECKS. WORK ACCOMPLISHED IAW EMB AMM II 32-63-01, 32-36-05. AIRCRAFT RELEASED.