linaweiss1

Fiat 500 Overheating Error

I've got a 2019 Fiat 500 diesel with 152874 km. I'm getting an error and the engine seems to be overheating. Coolant levels are fine. I suspect the bypass valve, but I'm not sure if that's the cause or just a symptom. Could a faulty air intake, exhaust system or fuel efficiency trigger this? Any ideas before I take it to a professional?

A 2019 Fiat 500 diesel is experiencing an overheating error despite normal coolant levels. The initial suspicion is a faulty bypass valve, but it could be a symptom rather than the cause. A faulty sensor affecting the ECU is suggested as a potential underlying issue, leading to the bypass valve error. The recommended solution is to use a diagnostic tool or consult a professional to identify the root cause, which in this case was confirmed to be a faulty sensor.

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4 comment(s)

Sounds familiar. I had a similar issue with my old BMW 3 series. Error code and overheating. Check for consequential errors; the bypass valve might be a red herring. What other codes are you seeing?

Thanks for the tip! Consequential errors? I only saw the bypass valve error. How would I diagnose potential underlying issues? Where did you find the root cause?

In my case, it was a faulty sensor messing with the ECU, which then threw a bypass valve error. A proper diagnostic tool should show more. Save yourself the headache and take it to a workshop, they should be able to tell you the root cause. It could be anything from a coolant leak to power loss, depending on which error caused the others.

Thanks a lot for the help! I took it to the workshop, and you were spot on! It was indeed a faulty sensor causing the bypass valve error. They replaced the sensor, cleared the codes, and everything is running smoothly now. Cost me absolutely nothing, as it was a warranty issue. I appreciate you pointing me in the right direction!

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FIAT

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500