ABS /trac off light but no code

So I bought an Actron CP9580 AutoScanner that scans ABS codes. I checked the website before buying to make sure that my car was supported, and it is. So I ran a scan and got a couple of codes, but no ABS codes. I emailed tech support at Actron and got a quick response saying that if the reader isn't giving an error but not finding the code that it is likely due to the ABS module being defective or not getting power. Does this sound right? Anyone have any thoughts on this?