all kinds of codes and problems.

[FlatLander]

This whole thing started with a P0153 ( Oxygen Sensor Circuit Slow Response (Bank2, Sensor1) code. Checked livestream with a obd-reader and noticed that O2SB2S1 had no voltage. So i changed the lambda sensor. Everything was good after the sensor change, for an hour (voltage was at the time 0,455V)... The new sensor did just the same that the old one with no voltage. I've measured the resistance (should be 11-16 Omh) and it was 14.2 omh. so it was ok. Measured the voltage to the sensor and that was ok. After a little cruise came more codes (some of them pending fault codes):

- P0174

- P2198

- P0153 (again)

- P0156

After that i went home and measured the old lambda-sensor. and that was ok with the resistance. 

I can´t figure out what or where is the problem. Tryied to check for vacuum leaks with my eyes in the dark and cold (yes it´s cold in finland...)

Any help would great!!! 

I´m a beginner with these car problems, so.....