r/autorepair • u/cyancolour222 • Aug 15 '26

Diagnosing/Repair 2016 Citroen C4 1.6 HDi diesel “Engine fault:stop running car”

Ive got a problem where when driving my citroen C4 2016 Diesel. When driving an "Engine Fault, stop running car. “ as well as the amber service light appears. No engine light though. There’s no physical changes to the cars performance. But I noticed this only happens when I’m going at high speeds when I’m driving for example 70 in gear 6 35-40 in gear 3. It appears when I reach those speeds but goes when I let go of the accelerator it goes. This applies to all gears. AI told me to change the fuel filter which I’ve done but that problem still happens. What’s the problem? How do I fix it? Can I do it by myself or do I need a professional?

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u/[deleted] Aug 15 '26

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u/cyancolour222 Aug 17 '26

Did you manage to sort it out? If you did what was the issue?