S40 Fault Code Coding Error

I experienced similar issues with my Opel Astra; various electrical faults and corresponding error messages. In my case the error code was caused by incorrect coding of one of the control modules. Have you scanned for specific fault codes using a diagnostic scanner?

Yes, the scanner indicated a coding error. Can you elaborate on what you mean by 'incorrect coding'?

Certainly. The control module within my Astra required proper programming to function correctly with the vehicle's system. When the coding is incorrect, the module sends incorrect signals, triggering fault codes and error messages. I would advise a workshop visit to recode the module.

Thanks for the advice. I took it to a shop, and it turned out the car's coding was incorrect, just like you said. Recoding cost me 360€, but it fixed the issue.