As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3923 -DIV- DIVERTED TO DTW DUE TO LEFT ENGINE NOSE COWL ANTI-ICE DISAGREE. CORRECTIVE ACTION: REPLACED LEFT NOSE COWL ANTI-ICE VALVE, RE-SECURED CANNON PLUG AND PERFORMED OPERATIONAL/LEAK CHECK PER B737 AMM 30-21. OPS CHECKS GOOD. (LP 0355097)