I just recently had an issue with my ABS unit on my truck, the issue is that the electrical system was sending power to the ABS unit when it was not in use, even when the truck was turned off. I took it in to my mechanic and he suspected that the cable running from the electrical system was corroded and it just needed a cleaning. Upon further inspection he found that the ABS unit and wire were in prime condition and a electrical short was suspected. What I am wondering is. Is is a common problem? Is it easy to fix? and what is the general cost.