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P1603 Diagnostic Trouble Code Discussion for July 2016

PCM Internal Shutdown Timer Rationality


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Trouble Ticket Help Requests for DTC P1603
Help Request Posted
2006 Chrysler PT Cruiser GT 2.4L MIL Lamp on, Limp Mode VIN: 3A8FY78G06
P1603: PCM Internal Dual-Port Communication Failure. ... Chrysler PT Cruiser GT 2.4l Turbo with an automatic transmission. When I first got the vehicle, it would intermittently enter limp mode and had codes P0882 and P0700. After a long talk with the customer and some trial-and-error, I discovered that if the ig...
July 29, 2016