As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STEERING INOP CAUTION MSG AFTER TAKE OFF RAN QRH MSG PERSISTED DIVERTED TO IAD. / REMOVED AND REPLACED THE NOSEWHEEL STEERING MANIFOLD IAW CRJ700 AMM 32-51-50-000/400-801-A01. PERFORMED GVI OF STEERING MANIFOLD LINES AND CONNECTIONS FOR EXTERNAL LEAK, NO LEAK NOTED. PERFORMED OPERATIONAL TEST OF NOSE WHEEL STEERING IAW CRJ700 AMM 32-51-00-710-801-A01, OPS CHECK GOOD AND NO OTHER DISCREPANCIES NOTED AT THIS TIME, A/C IS OK TO SERVICE.