luisedavis9
Skoda Fabia Diesel Overheating Issue
Summary of the thread
A 2001 Skoda Fabia diesel is experiencing engine overheating and a check engine light, with coolant leaking due to excessive pressure in the cooling system. The issue is suspected to be a control unit communication error, potentially caused by a bad cable or plug. Suggestions include checking for wiring damage or corrosion, particularly around the ECU and major sensors, as these can lead to CAN bus problems. A local shop confirmed the issue as a corroded plug, which was resolved by cleaning and replacing part of the harness.
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4 comment(s)
luisedavis9 (community.author)
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?
melinaguenther1
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?
luisedavis9 (community.author)
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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SKODA
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FABIA
melinaguenther1
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.