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P1601 Diagnostic Trouble Code Discussion for January 2013

PCM Serial Communications Malfunction


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Trouble Ticket Help Requests for DTC P1601
Help Request Posted
2003 Jaguar X-Type 2.5L No Start VIN: SAJEA51D63
P1601: Ecm/tcm serial communications fault. Instrument cluster says: pecus error e, engine system fault, gearbox fault. Throttle position voltage and percentage is right- 9% and 1.62 volts. Adding propane makes no difference. Has spark and injector pulse on the front 3 cylinders at least. It sounds norm...
January 18, 2013
2003 Jaguar X-Type 2.5L No Start VIN: SAJEA51D63
P1601: Ecm/tcm serial communications fault. Instrument cluster says: pecus error e, engine system fault, gearbox fault. Throttle position voltage and percentage is right- 9% and 1.62 volts. Adding propane makes no difference. Has spark and injector pulse on the front 3 cylinders at least. It sounds norm...
January 18, 2013