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OBD2 can't connect to ECU

I have a 1997 940 Classic (European). I have the check engine light on and I got a a used cheap OBD2 reader (ANCEL AS200). I connected it to the car and I get an error saying it couldn't connect to the ECU.

Should I look for a unit with a specific protocol, or what? I was still at the sellers house, so I didn't buy the reader. But now I don't know if it's worth getting one from amazon either!






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New OBD2 can't connect to ECU
posted by  SalvadorP  on Sun Aug 1 16:22 CST 2021 >


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