achimdrache60

Matiz Overheating Communication Error

My 2008 Chevrolet Matiz (gasoline) is overheating, and the check engine light is on. Coolant is leaking, indicating pressure in the cooling system. An OBD2 scanner shows a control unit communication error. Has anyone seen this?

A 2008 Chevrolet Matiz was experiencing overheating, a check engine light, and a coolant leak, with an OBD2 scanner indicating a control unit communication error. The problem was suspected to be related to a faulty cable or plug connection to the control unit. It was advised to seek professional help due to the complexity of car electronics. A mechanic identified and replaced a defective cable connection, resolving the issue.

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4 comment(s)

Sounds like the issue I had with my old Renault Clio, although symptoms may vary. A diagnostic trouble code pointed towards a communication fault. Have you checked the cable or plug connections associated with the control unit? A loose or corroded connection could cause that.

Thanks for the insight! I'm not an expert and unsure how to check those connections. Could you provide more detail about which specific connections to look at? Can I do this myself, or should I seek professional help? I'm frustrated about another mechanic visit.

Given you're not confident with car electronics, it's best to leave it to a workshop. I tried myself and damaged something else. A professional can pinpoint the faulty connection and repair it properly. It's probably just a corroded plug, not a big deal, but without the proper tools, you risk doing more damage.

Thanks for the advice! The mechanic found a defective cable connection to the control unit. They replaced the connector, and the issue is resolved. The bill was 95€, a fair price. Thanks again!

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CHEVROLET

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MATIZ