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P1601 Diagnostic Trouble Code Discussion for October 2009

PCM Serial Communications Malfunction

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Trouble Ticket Help Requests for DTC P1601
Help Request Posted
1997 Oldsmobile Achieva S 2.4L No Start, passlock VIN: 1G3NL52T6V
P1601: Serial Communications Malfunction. Has anyone come across this and do you know what make it return to the ref voltage reading? I don't know if I should send the IPC back to repair or if I'm way off base and it's a commuication problem between thew PCM and the IPC
October 15, 2009