I recently bought a second hand VW Golf.
It was 'serviced' and MOTed before the guy sold it to me.
He said three 02 sensors were replaced during the servicing.
The day I drove it away, the engine light came on.
I am taking it back on tuesday, but would like an opinion from a third-party.
I am going to buy a code reader tomorrow so I can go to the mechanics knowing where to look.
Could it be that the computer hadn't been erased, and so it still thinks what it thought before the faulty 02 sensors were replaced.
It passed the emissions test (passed MOT), so I think I can safely rule out a faulty cat converter?