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SalvadorP · Aug 1st, 2021, 22:02

I have a 1997 940 Classic. 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!

Aug 1st, 2021, 22:02	#1
SalvadorP Master Member Last Online: Apr 9th, 2024 17:25 Join Date: Jul 2021 Location: United Banana Republic of Portugal	OBD2 can't connect to ECU I have a 1997 940 Classic. 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!