If it's not detectable other than with a scantool, it's not significant. Some vehicles (not many Fords, but most Land Rovers & Jaguars) drive around with dozens of fault codes stored. If it were important, it would turn on the CEL, or you'd see/hear/smell/feel a symptom. Sometimes, it's the scantool that's causing the code, or misreading a code that's not actually there.So it saying -FAULT- Isn't an issue?