what is the code for epc on 2002 vw jetta?

EPC stands for Electronic Power Control. this means that your vehicle has a fly-bywire system, whish means that there's No accelerator cable and the throtle body is controled by the ECM (Engine Control Module). The Accelerator pedal (or gas pedal) it's just a sensor, so no mater what your input is on the pedal the ECM actuates the throtle how ever it wants. scary hu!!!, but have no fear, the Accelerator Pedal Module hoses two TPS sensors(Throttle Position Sensors), G79 & G185, this two produce an increasing voltage as you press on the gas pedal, but at diferrent rates for safety, the Throttle Body Control Module J338 (throttle body) also has two sensor G-187 and G-188, aswell as Throttle Drive Motor G186, G-187 and G-188 the output voltages mirror each other for safety reasons. back to your epc light, when you say reset it, do you actually clear the fault codes with a scanner, or you just cycle the ignition switch? either way if a fault for the brake light switch is present, this means most likely your problem is the brake light switch, some cases that brake light switch does not trigger a fault for still malfunctions and triggers an epc related code, i would replace the brake light switch, clear faults and test drive the car. Read more: http://www.justanswer.com/vw-volkswagen/18c6d-jetta-epc-light-keeps-coming-it-will-go-limp-mood-100-miles.html#ixzz3TrD6if7R