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Old Blue 08-29-2009 04:08 PM

P0605 code
I have a 2003 4.0l with AT that is displaying a p0605 internal memory code. I though that it indicated the PCM was defective so I picked up a used one at a autosalvage yard with the same part number and id#. code remains still after resetting. When I hold down the trip reset and cycle my key 3x I get a 04-05 code. I believe thats a EGR voltage code. Any ideas/Help.

JDsDream 08-29-2009 04:15 PM

First Welcome to the forum. You can find that code under generic codes at the link below. They also affer help in determining what the specific problem is.

Most Complete List For Jeep Check Engine Light Codes

Old Blue 08-29-2009 04:49 PM

Thanks for the Welcome. I gotr the code figured out just looking for my next step.. Im driving around in 2nd gear. Thats a safety feature of the PCM. Didnt know if anyone has any other ideas/tricks.

Rammer500 08-29-2009 07:33 PM

Does yours have a separate transmission control module by the washer tank? If so, that might the culprit.

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