Hi guys

Just a quick question, since our ozzie techs have NFI on the astra cars i thought i might come to you guys and get some answers.

The car is throwing up an emissions error.

I have had the o2 sensor changed under warranty but still the same problem.

The Tech 2 reads it as a cat error. I have had my cat looked at at an exhaust place and it seems fine.

The error disappeared for a few weeks all on its own but has suddenly returned once again out of the blue.

Any ideas?