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tildaschroeder1

C6 faulty injection system warning

My 2007 Citroen C6 diesel is showing a 'faulty injection system' warning. Fuel consumption is higher, engine power is reduced, it occasionally stalls, and there's smoke when accelerating. Could this be a defective cable or plug connection? Has anyone experienced something similar?

Summary of the thread

A 2007 Citroen C6 diesel displayed a 'faulty injection system' warning, leading to higher fuel consumption, reduced engine power, occasional stalling, and smoke during acceleration. The problem was suspected to be a defective cable or plug connection. After consulting with others who had similar experiences, it was advised to have the vehicle checked professionally. The issue was confirmed to be a defective connection within the injection system, which was repaired, resolving the symptoms.

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4 comment(s)

emilkrueger3

Sounds familiar. I've got a C6 diesel as well, and those symptoms ring a bell. Reduced power and smoke were my clues. You checked the air filter and all that?

tildaschroeder1 (community.author)

I have checked the air filter and did a visual inspection. Could you elaborate on your experience? Was the issue indeed related to the injection system, and did it present similarly?

emilkrueger3

Yeah, I think so. Honestly, I didn't mess with it too much myself. I just took it to a workshop. Best to get it checked out properly, I reckon.

tildaschroeder1 (community.author)

I followed your advice and visited a workshop. The issue was a defective connection within the injection system, fixed for 95€. The car runs smoothly again. I appreciate your help!

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CITROEN

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C6