P1689 ERROR CODE - Cause of code Found! - TheDieselGarage.com
TheDieselGarage.com
 

Home Forum Who's Online Today's Posts Vendors Advertise
Go Back   TheDieselGarage.com > Dodge Diesel & Truck Discussion > 5.9L Cummins (1998.5-2002)

Thread Details Posted by Mopar1973Man, this thread has received 6 replies and been viewed 9690 times.

TheDieselGarage.com is the premier Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
Old 01-28-2009, 07:19 PM   #1
Mopar1973Man
2nd Gen Guru
 
Mopar1973Man's Avatar
 
Join Date: Dec 2008
Location: New Meadows, Idaho
Posts: 2,641
Points: 34,924
Thanks: 9
Thanked 140 Times in 131 Posts
Send a message via Yahoo to Mopar1973Man
P1689 ERROR CODE - Cause of code Found!

Well gang...

Mopar1973Man is back out in his shop and found the cause of P1689 error codes.

Quote:
P1689 - No Communication Between ECM and Injection Pump Module Data link circuit failure between ECM and fuel injection pump. Low power, engine derated, or engine stops.
A lot of us assume its the injection pump that causes this which in most cases could be. But I was doing a fuel pressure test (cranking). This requires to pull the fuel system relay out of the PDC box under the hood...




Lower left side labeled fuel pump...

When this relay is missing the VP44 doesn't energize nor pump fuel. It allows you to do the cranking test. But it also sets a P1689 and CEL light. So for all of you that have a P1689 error code present check your fuel pump relay first by trading with another relay!
__________________
Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
Mopar1973Man is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-31-2009, 02:03 PM   #2
Mopar1973Man
2nd Gen Guru
Threadstarter
 
Mopar1973Man's Avatar
 
Join Date: Dec 2008
Location: New Meadows, Idaho
Posts: 2,641
Points: 34,924
Thanks: 9
Thanked 140 Times in 131 Posts
Send a message via Yahoo to Mopar1973Man
Addon to this post I did a short video of the fuel pressure test that causes the code...

__________________
Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
Mopar1973Man is offline   Reply With Quote
Old 02-01-2009, 12:47 PM   #3
Mopar1973Man
2nd Gen Guru
Threadstarter
 
Mopar1973Man's Avatar
 
Join Date: Dec 2008
Location: New Meadows, Idaho
Posts: 2,641
Points: 34,924
Thanks: 9
Thanked 140 Times in 131 Posts
Send a message via Yahoo to Mopar1973Man
That's odd 52 people look at the thread and no comment...
__________________
Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
Mopar1973Man is offline   Reply With Quote
Old 02-01-2009, 01:42 PM   #4
Deeslfxr
Heavy Equip. Is My Life
 
Join Date: Jan 2009
Location: Jordan, MN
Posts: 65
Points: 861
Thanks: 13
Thanked 8 Times in 8 Posts
Quote:
Originally Posted by Mopar1973Man View Post
That's odd 52 people look at the thread and no comment...
I am in awe... still trying to process! So you weren't trying to diagnose the 1689 by doing the pressure test, the code set after/because of the test, correct? It's amazing the amount of good info you collect/generate and post. I NEVER leave here without learning something. Once again, good job!
__________________
Russ
Late '99 F-350 7.3l 6sp 2wd Aftermarket dually kit 186,000mi STOCK
'99 Dodge 3500 24v 47re QCLB 4x4 DRW 131,000mi Straight-piped
'97 Chev 3500 6.5TD Auto-OD ECLB 4x4 DRW 199,000mi 4" exh. turbo to bumper
Deeslfxr is offline   Reply With Quote
Old 02-01-2009, 06:08 PM   #5
Mopar1973Man
2nd Gen Guru
Threadstarter
 
Mopar1973Man's Avatar
 
Join Date: Dec 2008
Location: New Meadows, Idaho
Posts: 2,641
Points: 34,924
Thanks: 9
Thanked 140 Times in 131 Posts
Send a message via Yahoo to Mopar1973Man
I can't seem to find the proceedure but it request that you pull the fuel pump relay from the PDC to do the cranking fuel pressure test.

When I was completeled the code was tripped... So it was a learning curve for me...
__________________
Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
Mopar1973Man is offline   Reply With Quote
Old 02-02-2009, 04:44 AM   #6
carharttkid629
Member
 
Join Date: Dec 2008
Posts: 43
Points: 793
Thanks: 2
Thanked 1 Time in 1 Post
i didn't look it up, but i believe thats what my truck threw when the suspect was the Throttle Positions Sensor (APPS) the truck would just cut out but stay running at an idle..... i'm not 100% sure....

are there any symptoms beside just having the code?
carharttkid629 is offline   Reply With Quote
Old 02-02-2009, 02:36 PM   #7
Mopar1973Man
2nd Gen Guru
Threadstarter
 
Mopar1973Man's Avatar
 
Join Date: Dec 2008
Location: New Meadows, Idaho
Posts: 2,641
Points: 34,924
Thanks: 9
Thanked 140 Times in 131 Posts
Send a message via Yahoo to Mopar1973Man
Quote:
Originally Posted by carharttkid629 View Post
i didn't look it up, but i believe thats what my truck threw when the suspect was the Throttle Positions Sensor (APPS) the truck would just cut out but stay running at an idle..... i'm not 100% sure....

are there any symptoms beside just having the code?
APPS codes (P0121, P0122, P0123). APPS codes will alow the truck to run but no throttle change.

P1689 No Comm between VP44 and ECM. The engine won't even start...
__________________
Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
Mopar1973Man is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Error Codes Dump and Code Listing Mopar1973Man General Dodge Discussion 7 01-03-2010 02:13 AM
OBD Error Code Dumping and Reading Mopar1973Man 5.9L Cummins (1998.5-2002) 1 04-26-2009 12:54 AM
Error Code: PO 308 JoeDirte 1994-2003 7.3L Power Stroke 9 03-08-2008 11:55 PM
code problem, CONTROL MOD KAM ERROR?? brietwyk 1994-2003 7.3L Power Stroke 7 07-19-2007 02:08 PM
code p0603 internal kar error bunsorrou 1994-2003 7.3L Power Stroke 15 08-28-2006 11:40 PM

New To Site? Need Help? TDG Specials

All times are GMT. The time now is 08:14 AM.



Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
DTO Garage vBulletin Plugins by Drive Thru Online, Inc.
vB.Sponsors
vBCredits v1.4 Copyright ©2007 - 2008, PixelFX Studios