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International Automotive Technicians Network
Re: No Crank Communication Errors
Posted to HD/Fleet Forum on 4/29/2026

. Look for CAN bus communication faults On heavy-duty trucks like the 2017 Freightliner M2, SPNs 2003 and 2071 (FMI 19) indicate Transmission ECU CAN communication errors and no communication with the TCM Diagnostic Network.

These can cause the truck to not ... Login to read more.