jeep patriot 2008 engine code 1603

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Carguy1 · Answer 1 · 2019-03-14T15:47:59+0000

Hi there,

This code indicates an issue with the PCM. Here is some info for you.

P1603 JEEP - PCM Internal Dual-Port Communication Failure

Read more: https://www.autocodes.com/p1603_jeep.html