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    OBDII No connection to ECU on S320

    Hello, I brought my 1995 S320 in for a smog check and was told that the "ECU does not have power" or is not working. The technician got an error message "OBDII No connection to ECU" which prevented them from running tests. Does anyone have a clue on what might be the problem and how to...


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Specialist in parts for W140 and R129 Mercedes-Benz models.
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