pcm trouble

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Oct 12, 2021 | 02:20 PM

morrisonjeff

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Joined: Oct 2021

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From: muldrow

pcm trouble

ive got a 1997 f350 7.3 powerstroke 2wheel drive automatic. im getting p0603-pcm processor keep alive memory (kam) error.
ive read up that i need to replace pcm but when i look to purchase a pcm it gives several different callibration codes like 7-89n or 7-90p or 6-89s or module id# DCP-203 or module id# DCP-202...
how do i figure out what i need ?? please help

Oct 12, 2021 | 03:35 PM

Edgethis

Lead Driver

Joined: May 2009

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From: Tobyhanma, PA

You'll probably have to pull the actual pcm you have out to read the codes on it.

Oct 12, 2021 | 07:06 PM

Sous

FTE Leadership Emeritus

Joined: May 2014

Posts: 27,354

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From: Lake Hartwell, GA

If you have FORScan or FORScan Lite you can read the box code without physically removing the PCM.

If you are not familiar with FORScan or FSL, there are details about it in the 7.3L PSD Tech Folder.

Oct 13, 2021 | 07:45 AM

cleatus12r

Butt-Head

Joined: Apr 2004

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From: Reed Point, MT

Auto will be DPC-202 .

Chipped? If so, that's causing your code. Also P0603 isn't a real problem...it won't cause any driveability issues.

Oct 18, 2021 | 11:07 AM

7.3PS95

4wd Low

Joined: Aug 2021

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I chipped my 95. I got the code before I pulled my PCM by sticking my phone between the PCM and the fender and taking a picture of the side of the PCM.
Give it a shot (or 5) and it might work for you, too.

I've seen several OBS models in the local junkyard here with PCM's that look unmolested... Depending on the yard, there may be a 30 day warranty, so the $20 for the new to you PCM isn't at risk.