P0012 Audi -

Question

Hi,

I just overhaul audi a5 2.0 to replace piston ring. After all assembled and start all working well. The engine is very smooth and no problem with enough power. But after a long driving about 40km the check engine light on. P0012. It possible wrong timing set-up? Or advance retard problem?

Answer 1

what year is the car? 

I would check the camshaft, before checking the timing

I can't post how to check the timing since I dont know what year your car is