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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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OBD2 can't connect to ECUViews : 1604 Replies : 10Users Viewing This Thread : |
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Aug 1st, 2021, 22:02 | #1 |
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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! |
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