Hi I am new to this forum, hoping for some advice from those that have experienced similar problems with their FSI A2.
Story behind problem is as follows: my wife's 2004 A2 1.6FSI, has been parked up for around 16 months & when it was taken for its MOT, before being put back on road, it failed its emissions test-never had this problem before. I then changed the front Lambda sensor (due to fault code P2202 coming up & garage suggesting front sensor was most likely cause) & the car just passed the emissions test/MOT with the CO being right on the 0.20% limit-other readings okay but HC were high at 108 ppm) . Now around 40 miles later the orange engine warning light has come on & the car is coming up with an active fault code P0139 (O2 sensor circuit slow response bank 1 sensor2) & a pending fault code P1176 (lambda sensor after catalyst control limit reached. We have had this car since it was a year old & it only has 12,400 miles on the clock & has never had any emissions/engine light problems before it was parked up.
The car had a new temperature sensor in the past(but that fault only caused temperature gauge not to work) but no other issues up to now. As its done so few miles I have doubts about the rear oxygen sensor failing & do wonder if the fuel injectors have got a bit blocked, or are leaking a bit, after being stood a long while. The car was started every few weeks during its time of the road & on the road it drives well with no obvious loss of power or misfiring ect.
I would appreciate any suggestions or solutions that cured other cars with same issue/fault codes.
Story behind problem is as follows: my wife's 2004 A2 1.6FSI, has been parked up for around 16 months & when it was taken for its MOT, before being put back on road, it failed its emissions test-never had this problem before. I then changed the front Lambda sensor (due to fault code P2202 coming up & garage suggesting front sensor was most likely cause) & the car just passed the emissions test/MOT with the CO being right on the 0.20% limit-other readings okay but HC were high at 108 ppm) . Now around 40 miles later the orange engine warning light has come on & the car is coming up with an active fault code P0139 (O2 sensor circuit slow response bank 1 sensor2) & a pending fault code P1176 (lambda sensor after catalyst control limit reached. We have had this car since it was a year old & it only has 12,400 miles on the clock & has never had any emissions/engine light problems before it was parked up.
The car had a new temperature sensor in the past(but that fault only caused temperature gauge not to work) but no other issues up to now. As its done so few miles I have doubts about the rear oxygen sensor failing & do wonder if the fuel injectors have got a bit blocked, or are leaking a bit, after being stood a long while. The car was started every few weeks during its time of the road & on the road it drives well with no obvious loss of power or misfiring ect.
I would appreciate any suggestions or solutions that cured other cars with same issue/fault codes.
