Have you tried Google?
EPC actually stands for Electronic Power Control.
It refers to the drive-by-wire system and any faults with the throttle pedal, throttle body, traction control, cruise control, even the MAF will on occasion trigger the light.
It's also known for a stuck brake light switch to do this. Some brake light switches have two pairs of contacts in them, one for the engine and one for the brake lights.
You need to get your motor scanned for any error codes logged in the ecu and post them.