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P1603 Diagnostic Trouble Code Discussion for May 2016

PCM Internal Shutdown Timer Rationality


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Trouble Ticket Help Requests for DTC P1603
Help Request Posted
2003 Dodge Dakota Sport 4.7L Cat monitor VIN: 1D7GG36N73
P1603: PCM Internal Shutdown Timer Rationality. ... test due to Cat monitor not supported. I found TSB#18-032-10 that covers the problem with a lifetime warranty... simple flash of the PCM. Took the truck to a local Dodge dealer to have it done. Dodge called stating the truck needs the PCM replaced due to I...
May 09, 2016
2004 Chrysler PT Cruiser Touring 2.4L No Start, MIL Lamp on, Transmission limp mo VIN: 3C4FY58B94
P1603: PCM Internal Dual-Port Communication Failure. ... original codes were p1603 and u0101, I tested all power and grounds that I could identify in wiring diagrams, everything seemed correct. So I condemned the ecm, I removes it and sent it out for rwbuild, the rebuilder call me and said internal processor fai...
May 19, 2016