["System too Lean" and "System too Rich" at the same time]

Yes. I'm planning to test that.

How to test fuel regulator?

Ok. What happens when I disconnect pipe to servo?

["System too Lean" and "System too Rich" at the same time]

I have been looking for air leaks many times... I replaced some hoses which I found to be problematic.

["System too Lean" and "System too Rich" at the same time]

Hi,

I have a problem on Lupo 1.0 AUC 37kW with fuel mixture. VCDS showing error:

17560/P1152 - Long Term Fuel Trim Additive Air; Bank 1; Range 2: System too Lean
17573/P1165 - Long Term Fuel Trim Additive Air; Bank 1; Range 1: System too Rich

After clearing these errors they comes back in few days. In a month comes on engine light too. Last time I cleared errors I looked on oxygen sensors learning values: -6% on idle and +24% on partial load. The strange thing is that readiness is absolutely OK. Any suggestions? I'm little bit helpless at this moment.

What have been done:
- new oxygen senzor
- cleared throttle body
- replaced some bad looking hoses
- cleared manifold preassure senzor
- changed fuel filter

Pics from VCDS there: https://imgur.com/a/ZehuiX5