Ok.... had p0015, p0025, p0011, P0021 code, was misfiring . I did as recommended...cleared/erased codes was fine. Went home no probs, next day..cel on again, no biggie, stopped and had codes read...this time p0390, p0365, p0345, p0340... only sensor codes.... car ran much better after clearing first codes ....just wondering, in your humble opinions....sensor or belt issue? Again, ran well with no misfire after clearing first codes....I am aware I need to replace tb with 100k on vehicle, just not feasible now and wondering if narrowing down which sensor to replace is ok for time being...it is a local driver only
2004 A4 3.0 cabriolet Quattro