Verso Check Engine Light and Idling

Hey! I think I had something similar happen with my Verso. Check Engine light, rough idling... it was a nightmare! From what I recall, the EVAP system (that's the Evaporative Emission Control System, responsible for preventing fuel vapor from escaping into the atmosphere) uses a pressure sensor to detect leaks. If that sensor isn't reading correctly because of a charcoal canister issue, it could trigger the light and mess with your idle. Have you noticed any drop in fuel efficiency, or a stronger smell of fuel than usual?

Thank you for the information. I have not observed a noticeable change in fuel efficiency, nor have I detected any unusual fuel odors. Considering these factors, do you still believe the activated charcoal filter is the most probable cause? Could there be other potential factors contributing to these symptoms?

Okay, so no change in fuel efficiency or smell... that does complicate things slightly. However, a failing charcoal canister can be tricky. It might not always present with obvious symptoms. It's possible the leak is small enough that it's not affecting fuel economy or causing a strong smell, but still enough to trigger the sensor and cause idle issues. Honestly, given the symptoms and your initial suspicion, I'd lean toward getting it checked out by a workshop. They can do a proper smoke test to pinpoint any leaks in the EVAP system. Could be other things, sure, but it's a solid starting point!

I appreciate your advice. I followed your suggestion and took the vehicle to a certified workshop. Following a leak detection test, it was determined that the activated charcoal filter was indeed defective, resulting in a ventilation system leak. The component has been replaced at a cost of 275€, and the vehicle is now functioning correctly. Thank you again for your assistance.