VW Taigo Stalling: EVAP Valve Issues Need Expert Fix

I experienced similar symptoms with my 2020 VW T-Cross. The check engine light triggered due to a faulty EVAP system, which turned out to be clogged vapor lines and a damaged gas cap. Initial symptoms matched yours, engine stalling at idle and emission system warnings. The diagnostic revealed that dirt and debris had blocked the tank ventilation pathways, preventing proper fuel vapor recycling. The gas cap seal was also compromised, failing to maintain correct tank pressure. The repair involved cleaning the EVAP system hoses, replacing the ventilation valve, and installing a new gas cap. This was not a minor issue since a malfunctioning EVAP system can lead to increased emissions and reduced fuel efficiency. The repair was necessary to prevent potential long-term engine damage. These symptoms typically indicate EVAP system problems rather than more severe engine issues. Have the mechanic specifically check the tank ventilation components and gas cap before exploring other potential causes. A proper diagnostic scan will confirm if the ventilation valve is indeed the source of the problem. Worth noting that driving with a compromised EVAP system can trigger additional check engine codes and potentially damage other emission control components over time.

Thanks for sharing your experience. Mine turned out to be similar with my VW Taigo. The purge valve and pressure sensor needed replacement, plus they found and fixed some blocked vapor lines. Would you mind sharing what the repairs cost in your case? Also curious if youve had any recurring issues with the EVAP system since the fix?

Thanks for the follow-up. After getting my VW T-Cross checked by a trusted automotive repair shop, I can confirm the tank ventilation valve malfunction has been completely resolved. The repair bill came to 175€, which covered cleaning out the clogged hoses and system inspection. The emission system has worked flawlessly since the fix, no check engine lights or any recurring EVAP problems in the past months. The idle is smooth now and fuel efficiency has actually improved slightly. A properly functioning tank ventilation system is crucial for preventing emission control issues. Regular maintenance checks can help catch these problems before they become more serious. Based on my experience, addressing EVAP system problems promptly is worth the investment to avoid more costly repairs down the line.

I took my Taigo to the dealership last week after reading these responses. The mechanic confirmed it was indeed the EVAP system causing problems. They replaced the purge valve and pressure sensor, which cost 320€ total, including labor. They also cleaned out some blocked vapor lines at no extra charge since the car is still under warranty. The engine light turned off immediately after the repair and the idle is perfectly smooth now. The fuel tank pressure is working normally according to the diagnostic readout. Im really glad I got it fixed quickly before it could cause any additional emission system problems. No issues since the repair and the car runs better than before. Definitely learned my lesson about getting these warning signs checked out promptly rather than waiting for bigger problems to develop.