I don't believe that the Carly scanner actually scans very much.

With just yellow it sounds like that was from a voltage issue and not related to your soft pedal problem.
You need a real scanner no matter what and for less than $120 USD a Foxwell NT-510 or NT-520 will save you a ton of headaches and money tracking down problems/faults.

Sent from my SM-A730F using Tapatalk

__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course