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To fix an OBD communication failure, first ensure that the OBD-II connector is clean and securely connected to the vehicle's port. Check the vehicle's fuses related to the OBD system and replace any that are blown. If the issue persists, use a scan tool to check for diagnostic trouble codes, which may indicate specific problems with the vehicle's ECU or wiring. In some cases, a software update or reset of the vehicle’s ECU may be necessary.

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1mo ago

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