[Tapani]

If the codes you noted are real try to re-solder the MAF first. I just did mine - yesterday it stalled first time ever (after installing the Nissan MAF 2 years ago). It's only a 30 minute job.

If you get a nonsense signal from the MAF your air/fuel ratio might be all over the place and you may get an out of range O2 signal too.

Not saying that your lambda sensor is not bad, just try to fix the MAF first.

/T