samuel_moon9
Skoda Citigo engine overheating and communication error
Summary of the thread
A 2019 Skoda Citigo with 51,126 km was experiencing engine overheating, coolant expulsion, and a check engine light, with diagnostics indicating a control unit communication error. The problem was suspected to be caused by a defective cable or plug connection. After further inspection, it was confirmed that a faulty cable connection to the control unit was causing the communication fault, leading to the overheating issue. Repairing the cable resolved the overheating and coolant spill problems.
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4 comment(s)
samuel_moon9 (community.author)
That's interesting. The CAN bus is something I was suspecting as well. Could you perhaps elaborate on the symptoms that led you to believe it was a CAN bus issue? Did you also experience control unit communication problems?
bernd_moore1
Indeed. The symptoms were strikingly similar: overheating, check engine light, and communication fault codes related to various sensors. Given the interconnected nature of modern automotive systems, a software glitch or CAN bus issue can manifest in myriad ways. While I am no expert, it would be prudent to have the wiring and control units thoroughly inspected.
samuel_moon9 (community.author)
Your input proved invaluable. Following your advice, I brought my 2019 Skoda Citigo to the workshop. The car diagnostics confirmed a defective cable connection to the control unit causing a communication fault, precisely as suspected. The repair cost amounted to 95€. The engine overheating issue and coolant spill are now resolved. Thank you.
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SKODA
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CITIGO
bernd_moore1
Engine overheating in a Citigo, accompanied by coolant spills and check engine light? Sounds awfully familiar. Did you by any chance experience any issues that suggest CAN bus errors?