VW Touran Stalling: EVAP System Failure Alert

I had a very similar issue with my 2006 VW Golf 1.6L FSI. At first, the check engine light would come on intermittently, then the idle problems started getting worse. After running basic diagnostics at home, the EVAP system showed multiple error codes. My trusted workshop performed a comprehensive leak detection test and found that the activated charcoal filter was completely clogged. This component is crucial for the EVAP system to properly manage fuel vapors and maintain stable fuel pressure. The fix included: Full system diagnosis, Replacement of activated charcoal filter, System pressure test after repair, Clearing error codes Total cost was 275€ and the repair solved both the check engine light and idle issues. Fuel efficiency also improved noticeably after the fix. To provide more specific advice about your Touran: What error codes is your system showing? Have you noticed any fuel smell? Does the problem get worse after refueling? How many miles/kilometers on the odometer? These details would help determine if you're dealing with the same issue I encountered.

Last service was done at 75000km and since then the engine has been running great without any warning lights. But now after reading about your experience, I am quite sure we are dealing with the same emission control system failure. My error codes point to P0441 and P0456, which also suggest EVAP system issues. The fuel smell is definitely noticeable, especially after filling up the tank. I will get the activated charcoal filter checked first since this seems to be a common failure point. The stalling at idle has become more frequent over the past week, making the car quite unreliable for daily use. Thanks for sharing your repair costs, that helps set expectations for the upcoming garage visit.

Thanks for the additional details. Those error codes definitely align with my EVAP system repair experience. The P0441 (incorrect purge flow) and P0456 (small leak detected) match exactly what I saw on my Golf before the repair. The strong fuel smell after refueling is a telltale sign of a failing activated charcoal filter. Since our cars are of similar age and engine type, the symptoms are remarkably consistent. The pressure sensor readings on mine were also erratic before the filter replacement. One additional observation from my repair: the workshop found that the leak detection pump was partially affected by the clogged filter. While not completely failed, they recommended replacing it as a preventive measure. I declined at the time but had to replace it 6 months later for another 180€. If the idle problems are worsening, I would suggest getting it checked soon. A failed EVAP system can lead to increased emissions and potentially affect other engine components. My fuel consumption increased by about 12% before I got it fixed. Have you noticed any changes in fuel efficiency since these symptoms started?

Thanks for providing your repair details. The situation does sound identical to what I am experiencing. I have actually been tracking my fuel consumption since the problems started, and yes, I am using about 10-15% more fuel than usual. The stalling has become really problematic, just this morning the car stalled twice at traffic lights. I have booked the car in for next week and will definitely mention the purge valve and activated charcoal filter based on your experience. Smart suggestion about the leak detection pump too, if they recommend replacing it, I will probably do it right away to avoid a second repair visit. I will keep track of how the pressure sensor readings look during the diagnosis. My air flow meter readings are normal according to the basic scan tool I have at home, but the EVAP system failure is pretty clear from all the symptoms and error codes. Really appreciate the detailed information about your repair costs and the specific components that needed attention. Will update once I get the final diagnosis from the workshop.