Fuel System
Check engine light, sensors (includes O2 or oxygen sensor), emission control devices (includes EGR), engine computer, engine computer, fuel cap, fuel gauge/sender, fuel injection system, fuel pump, fuel leaks, stalling or hesitation.
What Owners Say
"Several times a week I get a check engine light which codes out to Faulty Evaporative Emission System Switching Valve. The dealer replaced the valve but the check engine light continues to illuminate on a regular basis. The dealer tested the valve is good and can not find another cause. Since the issue does not affect driveability in any way, I purchased a bluetooth OBD II device which I leave plugged into the car. When the light illuminates I check that it is the same code and clear it."
Anonymous, AZ (2012 Volkswagen Jetta GLI 2.0-L 4 Cyl turbo)"This is a diesel Jetta. VW have refused to fix the problem or provide compensation as required by the Class Action."
Keith R., BC (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"trouble code 2450...evap"
Anonymous, AZ (2012 Volkswagen Jetta 2.0-L 4 Cyl)"The pump used to diagnose the fuel system failed and had to be replaced and was not covered under the warranty."
Anonymous, BC (2012 Volkswagen Jetta GLI 2.0-L 4 Cyl turbo)"The car failed the state emissions test. Took it to my local mechanic, but he could not completely resolve the situation. He ended up taking it to the dealer to be fixed."
Anonymous, IL (2012 Volkswagen Jetta SE 2.5-L 5 Cyl)"The issue caused a check engine lamp to illuminate"
Anonymous, AZ (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"This is a TDI Dieselgate issue"
Anonymous, ON (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"Cheat device on VW deisel cars"
Anonymous, ON (2012 Volkswagen Jetta TDI)"After having routine service the car stopped running. The entire fuel injection system, fuel lines and pump had to be replaced. Under warranty"
Ray F., AZ (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"The intake manifold needed to be replaced"
Anonymous, AZ (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"had to clean injectors due to carbon build up"
Anonymous, CA (2012 Volkswagen Jetta GLI 2.0-L 4 Cyl turbo)"Also part of the catastrophic failure of the fuel system"
Ray F., AZ (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"Low pressure pump died"
Don G., IN (2012 Volkswagen Jetta GLI 2.0-L 4 Cyl turbo)"The fuel filter and pump became clogged from using diesel that was not Ultra Low Sulfur (not easy to find). Car was undriveable but was replace under 80000 drive train warranty"
Anonymous, CA (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"HPFP Failure. Covered under warranty"
Anonymous, WA (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"Fuel pump in the tank failed which caused me to be without a vehicle for 48 hours. Covered by warranty"
Anonymous, WA (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"High pressure fuel pump failed. Replaced under warranty"
Anonymous, CO (2012 Volkswagen Jetta GLI 2.0-L 4 Cyl turbo)"Fuel pump system failure. Required replacement that was performed at no charge by the dealer when they determined that the failure was not caused by fueling with gasoline. Our family was quite pleased by VW response as the mileage placed the car out"
Michael M., MA (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"replaced"
Anonymous, TX (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"Fuel pump needed to be replaced in early 2020. After the repair, there was a leak. It had to be fxied 3 times. Fixed now."
Anonymous, MD (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"Check engine light came on. Diagnostics indicated a bad secondary O2 sensor (after catalytic converter). Despite clearing the codes twice, the check engine light continued to come on"
James V., MA (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"secondary pulse air system had issues"
Anonymous, CA (2012 Volkswagen Jetta SE 2.5-L 5 Cyl)"Faulty sensor. Engine light warning. Took 6 weeks for replacement part to arrive."
Anonymous, OH (2012 Volkswagen Jetta SEL 2.0-L 4 Cyl)"Sensor went bad. Required replacement."
Anonymous, OH (2012 Volkswagen Jetta SEL 2.0-L 4 Cyl)"Sensors do go wrong but the cost to replace them can be controlled by the manufacture - the cost is very high for the Jetta. To high compared to other vehicles."
Keith R., BC (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)"I think it was a particulate sensor. Anyway, it was $600"
Anonymous, NY (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl diesel)
"Check engine light came on at about 40k miles. Dealer couldn't find any issue. Now it's on again at 56k miles and needs new EGR valve"
Noel B., GA (2012 Volkswagen Jetta TDI 2.0-L 4 Cyl turbo)