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elias_weber55

Ccrosser Defective ECU

Hi, I have a 2009 Citroen Ccrosser, gasoline engine, with a defective ECU. It's showing reduced power and has errors stored. Mileage is 144533 km. I've heard it could be the main relay. Any ideas?

4 comment(s)

christopher_neumann1

Sounds like a potential ECU issue. Have you tried a system reset or had car diagnostics run? Could be a faulty relay, but like a bad fuse, what made it blow?

elias_weber55 (Author)

System reset as in disconnecting the battery? Car diagnostics were run and flagged the ECU. Where should I look for the relay?

christopher_neumann1

Yes, battery disconnect for the reset. Since diagnostics point to the ECU and the relay is a likely suspect, it's probably a good idea to visit a workshop. They can pinpoint if it's just the relay or something deeper within the ECU itself.

elias_weber55 (Author)

Thanks for the advice. Turned out the main relay was indeed defective. Got it replaced for 120€ and the car runs fine now.

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