Other Fuel System Tank Assembly problems of the 2012 Volkswagen Passat

Mechanic found a code for a defective adblue level sensor after I took the vehicle in to check the reason for the engine light illumination. They removed the adblue tank and installed an update kit. Yes, update kit, which tells me Volkswagen knows there is a widespread problem with the original level sensor equipment. Final cost of the repair: $1053. 51. This should be an extended warranty item, or recall.

Ad blue reductant tank failed. Thus making the emissions system not work properly. Part # 561-198-970-a is defective. The same failure occurred on my 2013 Passat within less than a month. This is a known defect from vw. Here is a link to a thread on the extent of these failures. . Read more...

Gas gauge was not reading full when taken to gas station, although gas dispenser clicked off as full. Happened many times at different gas stations. Took my car in to vw dealership. They stated that gas vent was not working not allowing my car to fill completely. They stated they had to replace gas tank, ~ $2000. Don't have the money to repair. They stated it was not a safety situation???.

Nox sensor malfunctioned out of range code. Was quoted 655 dollars to replace. Nox sensors are not required by federally mandated 80k emissions warranty so vw won't include voluntarily. One week after having this fixed, the check engine light turns on again with code p203b, redactant level range/performance. Speaking a few times with technicians at the dealership, this likely means the replacement of the ad blue heater unit and tank which is over 1000 dollars. Again, not covered under warranty.

The check engine light came on and I had codes read. The code was p205c and this indicates the emissions adblue heater and sensor had a problem. The unit (heater and sensor) in the adblue tank is a non serviceable unit and must be replaced. Over $750. 00 to replace. All the efficiency of tdi just went up in smoke. Happened at 4,000 miles past warranty and dealer had no help even though a lot of tdi's are having identical problems. Seems to be a defect in design, many many tdi's are having the same problem.

Engine light came on at 36900 miles, 900 miles passed the manufacture warranty. The error code read: p205c (reductant tank temperature sensor). It was a faulty sensor in the adblue tank from a tdi car. Already lots of owners had the exact same problem according to the dealership.

Started car after being parked for about 45 minutes. Fuel (diesel) started pouring out the back by the fuel tank neck. About 2-3 gallons of fuel came out ( less than a minute) before realized this was happening and turned car off. Had car towed to dealership. They have determined the fuel line came off but can not figure out why or how. Vw told them this has never happened. Checked on line and can see this is an issue that is happening but not being reported.