As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT, LEFT INTAKE LIGHT ILLUMINATED. COMPLETED QRH ITEMS LIGHT REMAINED ON. AIRCRAFT RETURNED TO DTW. MAINTENANCE RAN AIRCRAFT AND SWAPPED CANNON PLUGS FOR THERMISTORS P1 & P3 TO J4 & J5. OPS CHECK GOOD. RAN AIRCRAFT FOR 30 MINUTES.