One problem related to o2 sensor has been reported for the 2012 Volkswagen Jetta. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Volkswagen Jetta based on all problems reported for the 2012 Jetta.
Oxygen sensor code comes up, then all lights coming on, when vehicle is in motion. This car had a carfax sheet stating no problem and repairs done by micheal automotive in fresno CA. No recall ever mentioned, now a young mans first car , nothing but problems, only picked up because car fax stated it had no problems, now a safty concern.