Question

Check engine light on and I got the engine codes P0171 and P0102 general system too lean Any ideas? I'm 450 miles from the Audi dealer/service.

Answer 1

HI there,

The lean code is usually a result of either a vacuum leak on the intake manifold, a problem with the mass air flow sensor or an issue with the front O2 sensor.

Answer 2

P0171 AUDI - System Too Lean Bank 1
Read more: https://www.autocodes.com/p0171_audi.html

P0102 AUDI - Mass or Volume Air Flow Circuit Low Input
Read more: https://www.autocodes.com/p0102_audi.html