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idakoenig1

Peugeot 308 engine control malfunction

Hi, I'm having a weird issue with my 2015 Peugeot 308 diesel. It's got about 89,000 km on it. The engine just refuses to start. I'm getting an 'Engine control malfunction' message. I checked a few things myself, and the battery seemed okay, but I found that the cable connections weren't great. I cleaned them up, but still nothing. Any ideas before I take it to a shop? It feels like an engine software or ECU issue. Maybe related to engine stalling? Check engine light is on, of course.

4 comment(s)

valentinakoenig30

Hey, that sounds familiar! I had a similar problem with my old Renault Megane, although mine was a petrol version. Same symptoms – engine wouldn't start, and I was getting all sorts of weird error messages. Did you check the voltage on the battery? Even if the connections are clean, a weak battery can cause havoc with the ECU.

idakoenig1 (Author)

Thanks for the quick reply! I didn't actually check the voltage, just looked at the connections. So, you think it might be more than just a connection problem? Was it an ECU failure in your case, or something else?

valentinakoenig30

Well, in my case, it turned out to be a combination of things. The battery was weak, and it messed up the ECU readings. I'd definitely check the voltage with a multimeter. If it's low, try jump-starting it. If it starts, you know the battery is the culprit. But if it still doesn't start, it might be worth getting the ECU checked at a workshop. They have the tools to diagnose it properly.

idakoenig1 (Author)

Thanks a lot for the advice! I took it to the workshop, and you were right - it was the battery connections! After cleaning it cost me 155€. I really appreciate the help!

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