No MIL means no problem is currently being detected by the PCM.
If wires had been damaged, there is a possibility shorting would occur sooner or later as vibrations etc affects the harness and it is best to get it rectified.
The technician should be held responsible for resolving this.
You did not retrieve the trouble code so we do not know what circuit had been affected.
Tuesday, April 30th, 2013 AT 7:06 AM