VW Taos Fuel Sensor Failure Causes Engine Stalling

Last month I faced similar symptoms with my 2019 VW Tiguan. The check engine light and inconsistent fuel gauge readings pointed to a faulty fuel tank sensor. The stalling during idle was particularly concerning since it affected daily drivability. The diagnostic revealed two potential issues with the fuel system. First, the level sensor wiring harness had corroded, causing intermittent signals. Second, the fuel pump assembly, which houses the sensor, showed signs of wear. In my case, simply replacing the sensor would not have solved the underlying problem. The entire fuel pump assembly needed replacement since the car sensor was integrated into the unit. This turned out to be a serious repair requiring specialized tools and proper diagnostic equipment. Important points to consider: Get a professional diagnosis from a certified shop, Request inspection of the complete fuel pump assembly, Check the wiring harness for corrosion, Ensure replacement parts are OEM quality, Have fuel system pressure tested The repair significantly improved engine performance and eliminated the erratic fuel gauge readings. Given the similar platform between the Taos and Tiguan, these issues might be comparable.

Thanks for that detailed breakdown of your Tiguan repair. It really helps since I am dealing with nearly identical symptoms in my Taos. I am planning to take it to a shop this week. Just wondering how much you ended up paying for the full repair including the fuel pump assembly? Also curious if youve had any car electronics issues or sensor faults pop up since getting it fixed? My biggest concern is making sure all fuel system components get properly checked, since I dont want to replace just the sensor only to have more problems later. Seems like your thorough approach with checking the whole assembly was the way to go.

After my last visit to the shop, I can confirm the fuel level sensor fault was completely resolved. The mechanic found a blown fuse that was causing the erratic readings in the car dashboard. Total repair cost came to 52€, which was much less than expected given the initial concerns about the fuel pump assembly. The fix has proven reliable, no sensor faults or electronics issues have appeared since then. The fuel gauge now shows accurate readings, and the engine runs smoothly without stalling. Having the complete fuel system checked was definitely worth it for peace of mind, even though my issue turned out to be simpler than first thought. Your concerns about thorough diagnostics are valid. Its worth having them inspect all components while theyre checking the system. In my case, the fuel pump assembly and wiring were actually in good condition once the fuse was replaced. Sometimes what seems like a major sensor problem has a straightforward solution.

I decided to take my Taos to the certified VW shop downtown after reading about your experience. Turned out to be a smart move. The mechanic found that my fuel tank sensor was indeed faulty, but also discovered some wiring issues that needed attention. The total repair came to 380€, covering both the level sensor replacement and rewiring work. More than I hoped to pay, but watching the mechanic work made it clear this wasnt a simple plug-and-play fix. The car dashboard is now showing accurate fuel readings, and that annoying stalling problem is completely gone. One good thing, they did a full inspection of the fuel pump assembly while they were in there and confirmed everything else was in good shape. No other car sensor issues have come up since the repair three weeks ago. The engine runs perfectly now, even at idle. Really glad I got the whole system checked instead of trying cheaper quick fixes. Sometimes spending more upfront saves money in the long run.