luisedavis9

Skoda Fabia Diesel Overheating Issue

I'm having a problem with my 2001 Skoda Fabia diesel, which has 119053 km on the clock. The engine is overheating, and the check engine light is on. There's coolant leaking under the car, suggesting too much pressure in the cooling system. I think it might be a control unit communication error, maybe from a bad cable or plug. Could this be related, or is it a software problem? Any ideas?

4 comment(s)

Whoa, sounds bad! I had something similar with my Fabia, different year though. Overheating and the check engine light can mean a CAN bus problem. Have you checked the wiring for damage or corrosion? Especially around the ECU? A software glitch is possible, but I'd start with the connections. Plugs are often a weak spot.

Thanks for the quick reply! You mentioned the CAN bus. Is there a specific area of the wiring I should check? Any plugs that are known to cause problems? Also, if it was software, would diagnostics tools find it, or would I need special equipment?

I'd check the connectors near the ECU and any major sensor. Look for green gunk. Diagnostics should show a CAN bus code if it's a connection problem. If the code is vague, it's likely the wiring. You need a proper scan tool. With those symptoms, I'd go to a workshop. Messing with the CAN bus can cause damage. Better safe than sorry, right?

Just to let you know, the local shop confirmed a control unit connectivity issue, like you thought. A corroded plug was the problem. They cleaned it and replaced part of the harness. Cost 95€, which is fine. Thanks again for the help!

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