Failing a Skill Check while repairing:

Prevents the Generator Explosion.
Applies the default Regression penalty.
Applies an additional Regression penalty of 5/4/3 percent.
Technician reduces the audible range of your Generator-repairing noises by 8 metres.

Unlocks potential in your Aura-reading ability.
Once all Generators are completed, Wake Up! activates:

The Auras of the Exit Gate Switches are revealed to you within 128 metres.
When opening an Exit Gate, your Aura is revealed to all other Survivors within 128 metres.
You open Exit Gates 15/20/25 percent faster.

As soon as the Exit Gates are powered, gain a 5/6/7 percent Haste Status Effect.

While being carried by the Killer, the following effects apply:

Increases the intensity of the Struggle Effects on the Killer from your Wiggling by 60/70/80 percent.
Obscures the Auras of all Hooks from the Killer's Aura-reading abilities within 16 meters.
Fills your Wiggle Meter by 33 percent of your current Wiggle progression upon landing, when the Killer drops from great heights.