Hi Guys, New to the forum
Basically, my dads 2001 1.6 Zetec Focus engine management light came on 4 years ago. He took it to a garage which diagnosed the fault as catalytic converter and replaced it.
4 weeks after the light came back on, but my dad stupidly ignored it
Every year since, my dad has paid £300-400 for a new catalytic converter for the annual mot (light still stays on)
He has just paid for his 4th which is a joke
Any ideas what could be the problem