VW Atlas Stalling Issues: Bad Purge Valve Suspected

I experienced nearly identical issues with my 2014 VW Tiguan. After dealing with unusual stalls and check engine warnings, I took it to a workshop where they diagnosed problems with the EVAP system. The main culprit turned out to be clogged hoses in the emission system and tank ventilation. The pressure sensor was picking up irregular readings due to these blockages, causing the stalling issues at idle. The repair involved cleaning out the system and replacing a few deteriorated hoses, costing 175€ in total. The symptoms are very similar to what you describe, especially the unusual stalling at idle. Before going to the shop, I also noticed a loose gas cap would trigger the check engine light, but tightening it only temporarily resolved the warnings. To help provide more specific guidance: What diagnostic codes is your check engine light showing? Have you noticed any fuel smell around the vehicle? Does the problem get worse after refueling? These details would help confirm if your Atlas is experiencing the same EVAP system issues my Tiguan had. The repair was straightforward once properly diagnosed, and the car has run perfectly since.

Last service was at 103000km and based on my experience, replacing the purge valve and pressure sensor components resolved the stalling completely. The repair cost was 320€ including parts and labor, which seemed reasonable given the symptoms. The check engine codes showed P0456 and P0441, indicating a clear issue with the tank ventilation system. After the fix, I noticed much smoother idle performance and no more unusual engine cutouts. The gas cap now seals properly without triggering any warnings. If your symptoms match mine, focusing on the EVAP system components should lead to a solution.

Thanks for sharing those details about your Atlas repair. Really helpful to see those specific fault codes and repair costs. My Tiguan had the exact same P0441 code, and the repair approach was similar. Since my initial EVAP system repair, I also ended up replacing the purge valve as a preventive measure when it started showing early signs of wear. Learning from your experience, the complete fix with both purge valve and pressure sensor seems to be the way to go for a long-term solution. The automotive repair shop mentioned these tank ventilation issues are fairly common on VW models from that era. My total repair costs were a bit lower since I only had the hoses done initially, but investing in the complete purge valve replacement like you did probably saves money in the long run. One thing I noticed after the full repair was the fuel tank pressure now maintains much more consistently. Have you also found your fuel economy improved slightly after the fix? On my Tiguan, the engine light hasnt returned since the complete repair, suggesting these components really were the root cause.

Having dealt with this stalling issue for several weeks, I can confirm the repair has proven completely effective. The combined replacement of both the purge valve and emission system components was definitely the right call. Those specific fault codes P0456 and P0441 really pointed directly to the tank ventilation problem. The total 320€ repair cost included both parts and labor, which I consider money well spent given how the car now performs. My fuel efficiency has actually improved by about 7% since the fix. For anyone searching the forums with similar symptoms, the pressure sensor and purge valve replacement resolved all the unusual stalling completely. My gas cap now seals properly without triggering any error codes. After 3000km of trouble-free driving since the repair, I can say with certainty this was the correct diagnosis and fix. One unexpected benefit has been the much smoother idle, the engine maintains a steady RPM at stoplights instead of the erratic behavior I was experiencing before. The repair shop mentioned these emission system issues are quite common once these vehicles age, so preventive maintenance of these components is worth considering.