p0603 KAM error question - Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 1 Old 08-29-2011, 06:49 PM Thread Starter
CassMori's Avatar
Join Date: Nov 2009
Location: Sacramento, CA
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
p0603 KAM error question

Today I had my CEL come on while pulling a hill loaded - this has happened before, in this truck and in my previous '02. CEL goes out after ~6 minutes. I had my Flashpaq handy today, and was finally able to read the code while the light was still on. Showed the p0603 KAM error, which from what I understand is supposed to occur when the batteries are disconnected, or similar power loss to the pcm.
Now that I have a working EGT gauge, I can see that this light/error code is reliably set at ~1275 degrees (yes, I know that's probably too hot - easy to hit with the flaspaq & a 12k 5th wheel). I was experimenting, at 1250, no light, 1275, light comes on, same code every time. Goes off at ~6 mins, unless 1275 is hit again while the light is on, then it takes ~15 mins to go off (6 mins from last time at 1275?). Temps don't have to be held at 1275, just touch it for a second, and the light comes on.
Previous to today, I never had a way to check the code before the light would go out (and no gauges to guess the cause), and it never set a stored code. Only happened once previous in this truck, maybe twice in my old truck.

Other than the standard reasons for this code, anyone have any idea what causes it? I initially was thinking it would be a backpressure/EGT too high code, until I plugged in and read it.

2005 F350 SD Crew Long Bed FX4 Dually Lariat, 6.0L PSD. 4" catback, 3.5" dp & cat delete, Sinister Diesel coolant filter; Bulletproof EGR cooler, ARP studs. 380k+
CassMori is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome