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larshartmann81

Jumpy Reduced Engine Power

My 2000 Citroen Jumpy diesel with 127832 km is suffering from reduced engine power, and the error memory has logged something. Could it be a defective engine control unit?

Summary of the thread

A 2000 Citroen Jumpy diesel experienced reduced engine power, with error codes logged in the system. Initially suspected to be a defective engine control unit, the issue was later identified as a faulty main relay. Replacing the main relay resolved the problem, restoring the vehicle's performance.

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4 comment(s)

laurablaze7

Reduced power and error codes? Sounds familiar! I have a Jumpy as well. Have you checked the main relay? It's often the culprit with these kinds of issues. Have you looked into that?

larshartmann81 (community.author)

The main relay, huh? Where exactly is that located, and is there any way to test it before I start replacing parts?

laurablaze7

Yes, the main relay. It's often a pain. Honestly, I'd suggest a workshop. They'll be able to pinpoint it exactly and replace the relay if needed.

larshartmann81 (community.author)

Thanks for the advice! It did turn out to be a defective main relay, causing the ECU to throw errors. Replaced it for 120€ and now it runs like new again!

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CITROEN

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JUMPY