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What causes the Volkswagen EPC light to illuminate and severe jerking during acceleration?

1 Answers

LeJuniper

07/29/25 2:46pm

The jerking is caused by sludge in the transmission fluid circulating within the transmission, which blocks the oil passages in the valve body, or faults in components such as spark plugs and ignition coils. Below is a related introduction to EPC light illumination faults: 1. Cause explanation: A constantly illuminated EPC warning light indicates a fault in the engine management system or electronic control, often accompanied by unstable idling or engine cold-start shaking. However, for domestic car owners, this is usually due to the quality of fuel and a dirty driving environment. It is recommended to drive to a service station for inspection as soon as possible. In most cases, cleaning the throttle body can resolve the issue. 2. Precautions: If the EPC light is on but there are no noticeable symptoms, you can continue driving, but it is still necessary to perform timely maintenance and inspection.

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