Audi Repair: a4 2002 1.8 t evap, mass airflow sensor, o2 sensor

Question
now i have problem with the engine light  full on and then flashing . the care ides like up and down and hesitates when i drive . checked the code it was 1486 ?? they said it was for evap sys ? dose it cots a lot to fix at dealer?? do i have leak ? where is it located in my Audi .

Answer
I would check the codes again, that code doesn't come up with anything.  The poor running could be due to a faulty MAF (mass airflow sensor) or a bad O2 sensor.  Sometimes a bad O2 sensor triggers other fault codes.  Get the code read out again and let me know what it is,  Jan