As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSTALLED NEW CONTROL CABLE ASSY AS SUPPLIED BY CESSNA AIRCRAFT. INSTALLED AND RIGGED PER CESSNA R172K SERVICE MANUAL. ALL OPS CHECK OK ON GROUND PRIOR TO FLIGHT. RUN-UP OPS CHECK OK. FLOWN FOR 2.0 HOURS FOR ENGINE BREAK-IN. ALL OPS NORMAL. UPON RETURN TO GROUND. OPS CHECK OF ENGINE CONTROLS REVEALED FROZEN SOLID GOVERNOR CONTROL CABLE ASSY. CABLE NR 1 RETURNED TO CESSNA FOR EVALUATION.