A friend of mine has an issue with said car (I KNOW it is a Vauxhall, but PSA owns them now, don't they
Fuel trim too high,
Fuel trim too low,
Catalyst system efficiency below threshold,
He also has found that, on a cold day, he may get an ABS and Traction Control error, but these will then clear down by themselves.
Does anybody have any suggestions as what to look for (I did suggest matches and petrol, but got a stroppy response!)?