PHP would have to determine that, but if the problem continues, it probably IS a cable fault.
If things are working now, why don't you switch to the #2 tune now so you'll be ready for Friday? I'm planning to go on a trip with our trailer in a week, and I've already switched over to the towing tune. It's really a good all-around tune and I always like to make sure things are ok well in advance of starting out.
This way, even if you have to send in the OBD cable for replacement, the truck will be set up for the "demanding" usage. It can always be driven without having the Gryphon connected.
- Jack
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