As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPT COURSE SELECT KNOB DOES NOT SELECT A COURSE. GROUNDED - YES. ACCOMPLISHED DFCS BITE FOR CURRENT STATUS AND FLT HISTORY - NO FAULTS. REF B737-800 FIM 22-11 TASK 801. ALSO ACCOMPLISHED EXTENDED MAINT BITE FOR MCP - ALL TESTS PASSED. REF FIM 22-11 TASK 803.