Vauxhall Zafira zafira 1.6 petrol exhaust e!mission light comes on and stops on on cold mornings. resets and works ok. then on a cold morning does the same again.

If you do short journeys it doesn't help . When you start on cold mornings it runs a lot richer till it gets warmed up . If this is the case , a good blast on the motorway for a while might help . Otherwise you need to get it scanned for fault odes and act on findings

P.s
Please do not double post , helps no one , especially in replying .