Why does the Jetta EPC light come on with loss of power when accelerating?

[CatherineDella]

There are mainly three reasons for the Jetta's EPC light coming on with loss of power during acceleration. They are: First reason: Throttle body is too dirty. Second reason: There is a leak in the intake system. Third reason: There is a leak in the crankcase ventilation system. The main solutions for the EPC light coming on are the following four: 1. Troubleshoot intake system faults, use fuel that meets standards, and clean the throttle body. 2. Remove carbon deposits from related parts. 3. Rewrite the relevant ECU data. 4. The possibility of other faults cannot be ruled out; specific diagnosis should be based on reading fault codes.