VW Virtus Stalling: Bad Fuel Sensor vs Injector Fix

Had similar symptoms on my VW Jetta (2016 gasoline) last summer. Unusual engine stalling at idle and jerky acceleration pointed to fuel delivery problems. Initial scan showed fuel pressure sensor fault codes, but deeper testing revealed multiple issues in the fuel system. The actual problem turned out to be corroded electrical connections at the fuel pump harness, which caused irregular fuel delivery and confusing sensor readings. The fuel pressure sensor was functioning correctly, it was just reporting the real pressure fluctuations caused by the bad connections. The repair involved cleaning connector terminals, replacing damaged wiring sections, and testing the entire fuel system including fuel injectors. The fuel pump was also tested but worked fine once proper power was restored through the fixed connections. This is potentially serious since inconsistent fuel delivery can damage fuel injectors over time and leave you stranded if the engine stalls at the wrong moment. Would strongly recommend getting a complete fuel system diagnostic rather than just replacing the sensor based on symptoms. Key signs it was the wiring rather than sensor: engine stalling happened more frequently in wet weather and the jerking got worse during acceleration when fuel demand increased.

Thanks for sharing your experience. I ran into an almost identical situation with my Virtus last winter, rough idle, engine misfires, and stalling. The check engine light kept coming on. Your wiring issue diagnosis makes perfect sense. After a complete fuel system inspection, my mechanic found corrosion in the fuel pump wiring harness too, leading to erratic fuel delivery. Getting the whole fuel system tested saved me from unnecessarily replacing parts. Can you recall roughly how much the repair costs were in your case? Also curious if youve had any fuel delivery related problems since getting it fixed?

I can confirm the repair fixed all the fuel delivery problems in my Jetta. Since getting the corroded wiring harness and faulty fuel pressure sensor sorted out, the engine runs smoothly with no stalling or rough performance issues. The check engine light hasnt returned either. The total repair came to 95€ for fixing the cable connections, which included cleaning the terminals and replacing damaged sections. Pretty reasonable considering the initial quotes I got for a complete sensor replacement were much higher. Fuel economy actually improved after the fix, likely because the fuel delivery is now consistent. No more engine misfires or jerky acceleration when demanding more power. Getting the electrical connections diagnosed and repaired was definitely the right call rather than just swapping parts based on symptoms. Its been over 6 months now with zero fuel system related problems. The engine idles perfectly and performs like new. If your mechanic found similar wiring issues, you should see the same reliable results after repair.

I took my Virtus to the mechanic last week and got everything sorted out. The wiring repairs cost me 120€ total, a bit more than yours but still way less than the sensor replacement quote I initially got. The mechanic cleaned all the corroded connections in the fuel pump harness and replaced a small section of damaged wiring. The full diagnostic also revealed slight contamination in the fuel system, so they did a quick fuel system cleaning which helped eliminate the rough idle completely. After a week of driving, the engine runs perfectly now. No more stalling, no engine misfires, and the jerky acceleration is gone. The check engine light cleared up right after the repair and hasnt come back. Just glad I asked here before spending big money on unnecessary parts. Getting the complete fuel system checked instead of just replacing the pressure sensor definitely saved me time and cash in the long run.