A mate of mine with has a 2004 Vectra cdti 120 that is occasionally displaying the EML, although the car is running fine and there are no codes coming up when we check. He has another mate who is a Kia mechanic in a large garage and he has told him that they are getting a lot of cars coming in with similar problems and the common thread seems to be the owners are using Supermarket fuel. They have been advised to change to a 'branded' fuel and in a lot of cases it has solved the problem. Just wondering if any other members have had any experience / views on this. Appreciated this question may have been raised before but have done a cursory search and can't find anything.
We have checked all the usual suspects - sensor connections, egr valve, replaced the fuel filter, etc but still got the problem.
Apologise if duplicated post but would appreciate any views
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