2 codes - PowerStrokeNation : Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 04-02-2010, 02:50 PM Thread Starter
PSN Local
Join Date: Jan 2010
Posts: 111
2 codes

I got 2 DTC's on my '95 OBS. Can anybody tell me what they mean?
P0603 and P1661 Thanks
jacmurr is offline  
Sponsored Links
post #2 of 3 (permalink) Old 04-02-2010, 05:09 PM
Demon Dually
speeddemon31176's Avatar
Join Date: Oct 2009
Location: Carbondale,PA
Posts: 5,140
Send a message via AIM to speeddemon31176 Send a message via Yahoo to speeddemon31176
Re: 2 codes

P0603 is an internal KAM(keep alive memory) error.
P1661 is Output circuit check circuit error which is another PCM error code.

It is sounding like you either have a bad PCM or if you have a chip installed it could be causing an issue with you computer. The easy way to check that is to unplug the chip and see if the problem goes away. Another thing to do is to unplug the harness from the computer and check for oxidation on the pins and to clean thoroughly and apply die-electric grease and reconnect and test again.

97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
ARP's, 910's, Smith Bros. to come
speeddemon31176 is offline  
post #3 of 3 (permalink) Old 04-02-2010, 07:01 PM Thread Starter
PSN Local
Join Date: Jan 2010
Posts: 111
Re: 2 codes

thanks speeddemon.
Would the fact that I left my lights on all day, and killed the batteries a couple days ago have any thing to do with it?
jacmurr is offline  

Quick Reply

Register Now

In order to be able to post messages on the PowerStrokeNation : 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:


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