Petrol or diesel ? whatever it is , fault codes are only a rough guide, they can be the result of a different problem. I don't think a generic fault code reader is going to give you enough information to accurately diagnose the problem.
Hmm...so we have more information than we can interpret from the generic scan tool (no one has told the OP what his existing message means), so the solution is to get a scan tool that gives us more information?
Double up on the Delphic?
Scan tool, Scam tool?
Spam tool?
MIGHT work, but it might just deepen the mystery.
I'd suggest a reasonable initial approach might be to assume that:-
"Insufficient EGR flow"
means
"Insufficient EGR flow"
Because you, like, havn't got enough flow in your EGR system
Because its plugged solid.
Mine was.
It COULD of course be more mysterious. (I believe MAF sensors can be involved, so cleaning that might be worth a try, though I havn't looked into that).
It might even involve failed DPF regeneration, as mentioned above.
I can't offhand imagine how, but I'm not an OBD2 system, nor do I have one.
Not too unhappy about that.
Edited by edlithgow on 11/12/2020 at 03:31
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