simon_flame5
Barchetta Control Unit Communication Error
Summary of the thread
A 2005 Fiat Barchetta is experiencing a control unit communication error, leading to overheating, a check engine light, and a coolant spill. Diagnostics suggest a potential defect in cables or plugs. A similar issue was resolved by addressing a faulty connection within the control unit wiring, and professional inspection is recommended if the problem persists.
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4 comment(s)
simon_flame5 (community.author)
Yes, a diagnostic trouble code indicated a communication fault within the engine management system. I visually inspected the wiring harness but didn't see anything obvious. Could you elaborate on the issue you had with your Barchetta?
lilianflamme10
My issue also involved overheating and coolant loss. I spent days checking sensors and connections, but I had to take it to a workshop. They diagnosed a faulty connection within the control unit wiring. I'd suggest a mechanic if you can't find anything obvious. It might save you time and frustration.
simon_flame5 (community.author)
Based on your recommendation, I took it to a trusted workshop. The repair was 95€, which was the anticipated cost. It was indeed a faulty connection. Your input was invaluable.
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FIAT
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BARCHETTA
lilianflamme10
I also own a Barchetta. Your issue sounds familiar to a problem I had last year. The overheating and coolant spill are concerning. Did you get any diagnostic trouble codes? A communication fault can be a real headache. It could be a wiring issue, software glitch, or a faulty sensor. Have you checked the wiring harness for damage or corrosion?