CO is too high

What is a MAF sensor? A defect Lambda is often talked about here in Germany as the cause for higher petrol consumption and eventual bad CO readings

Steve,
The MAF sensor is:Mass Air Flow sensor

Dmitri,check for vacuum leaks,everywhere and check the CTS sensor=Coolant Temperature Sensor
Good Luck,
Zoli

Thank you!
Dmitry B

Hi, Zoli
The problem was in a volume, that I have mixed places of a wire on injectors of the third and fourth cylinders when changed injectors
Regards, Dmitry