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Peugeot 408 2012: Overheating, oil light illuminated and engine noises - suspected defective engine oil temperature sensor

Hello folks! My Peugeot 408 from 2012 with a gasoline engine has been behaving very strangely recently, it overheats, the oil light comes on and the engine makes strange noises. I suspect that it might be the engine oil temperature sensor. Has anyone here had similar problems and can tell me what was done in the workshop to solve the problem? Many thanks in advance for your tips and experience!

(Translated from German)

4 comment(s)

Hi, I drive a 2010 Peugeot 406 and had a similar problem. Although, to be honest, I have little experience with cars, I could tell that there was a problem with the cooling system. At that time, my oil light was also on and the engine was also making strange noises. So, I took it to the garage. They found that my coolant level was too low, so that was the reason for the overheating. It cost 52 euros to fix the problem. Perhaps this could be the case for you too? To be able to help you better, I would need more information about your vehicle. Have you perhaps changed the coolant recently or noticed that it has become less? Have you noticed any other symptoms?

(Translated from German)

Hi, thank you for your quick reply. I haven't changed the coolant recently, but I've also noticed that the coolant level is lower than normal. So that could be the reason. I haven't really noticed any other symptoms. I have 77408 kilometers on the car, so it's probably time for a visit to the garage. Your tip sounds very sensible, I'll have it checked. Thanks again for your help!

(Translated from German)

No problem, you're welcome! It's well known that the Peugeot 408 can sometimes have cooling system problems, especially with higher mileage. I would definitely recommend that you have the cooling system checked, especially because of the low coolant level. There may also be a leak in the system or the water circulation may not be working properly. It also can't hurt to check the oil pressure and the condition of the oil as the oil light is on. Sometimes this can indicate a problem with the oil pressure or the pump, which can also lead to strange engine noises. Please have this checked by a specialist garage. It might need a simple fix like a coolant change or a more serious repair, but it's better to be safe than sorry. Good luck!

(Translated from German)

Hey, thanks for your detailed reply and the other tips! The oil light is indeed not lit all the time, but I should still have it checked. I will take my car to the garage soon to check the cooling system and oil pressure. Hopefully it's nothing serious and a change of coolant or engine oil will fix the problem. You're absolutely right, it's better to be safe than sorry. Thanks again for your help and advice!

(Translated from German)

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