Code P1689?

DavesCummins · 09-16-2008, 07:54 PM

Hi, I am new to cummins forum and am looking for some help on my Grandfather's truck. It is a 1998.5 Ram 2500 24v and it dies on the road about every other week. It will start back up after sitting for an hour or so and sets code P1689 no communication between ECM and injection control module. I have used ALLDATA and checked the wiring harness for shorts or open circuits, and it says if all that check out then replace the ECM. The ECM is over $1000 from the dealer and I would hate to replace it if that is not the problem. Without checking it when it acts up, I cannot be sure that is the culprit. Any suggestions or help would be greatly appreciated. Thanks, Dave

__________________
2004.5 Ram QCSB AirRaid, TSTPowermaxCR, SmartyCR, MBRP 4" Turbo Back, Air Dog 150, Silencer Ring MIA, Stewart Warner Gauges, ATS Converter, Shift Kit, 2" lift, 315's on 06 wheels

**SOUTHERN SMOKE** · 09-16-2008, 07:59 PM

start off with checking the wires to the injection pump, usually when you get that code, the pump is going bad, and is about to die... i would start there....

__________________
CLICK---> GEORGIA CUMMINS CREW 2003 CTD SMOKIN' BLACK BEAUTY... QCSB 4x4 6-SPD...AUTOMETER BOOST, FUEL, OIL...2ND GEN 24V INTAKE HORN...EDGE J/A... B&W TURN-OVER... QUADZILLA R/P...RECON L.E.D. RUNNING LIGHTS... RECON LINE OF FIRE...33X12.50 COOPERS...SRT-10 HOOD...XM RADIO...THEY CALL ME SMOKEY...

Ramtech · 09-16-2008, 09:11 PM

i agree, 9 out of 10 times the code means the pump is going bye bye. just my .02

DavesCummins · 10-09-2008, 06:45 PM

I replaced the injection pump and it fixed the problem. Thanks for the help!

__________________
2004.5 Ram QCSB AirRaid, TSTPowermaxCR, SmartyCR, MBRP 4" Turbo Back, Air Dog 150, Silencer Ring MIA, Stewart Warner Gauges, ATS Converter, Shift Kit, 2" lift, 315's on 06 wheels

jason · 10-18-2008, 07:42 AM

I just got the code 1689 yesterday. I just had the fuel injection pump 2 weeks ago. I went and squeezed the connections on the harness for the pump and I found one that had just barely came out because when I squeezed it I felt it snap into place. So far so good no engine light and no codes.

__________________
2000,4x4, quad, 315procompAT's, XZT+ to big hoss level 5, banks high ram, banks wastegate, 100hp injectors, 4" exhaust,TAG, ranch hand bull nose, leveling kit, auto with hughes perf. TC and VB, pillar gauges- trans, pyro, boost, fuel press, BHAF,

KWR · 10-27-2008, 01:27 PM

Hi, I am new to cummins forum and am looking for some help on my truck. It is a 2001 Ram 3500 24v and it stops for a second picks back up, kinda like a miss fire. The code is P1689 no communication between ECM and injection control module. This is my first Dodge and this problem dose not seem to be easy to fix by what I read. Any suggestions or help would be greatly appreciated. Thanks, Ken

mathews8pt · 10-27-2008, 01:36 PM

Most of the time this code means your injection pump is going out. Do you have any problems with starting it, or lack of power on an intermittent basis? Mine had this code, wouldnt start at all, replaced the inj. pump now its fine.

__________________
99' 2500 AEM intake, 4" exhaust, Holley Blue, Edge w/ Attitude, Coaltrain tranny, Coaltrain 150 sticks, new II so vp44, trac bars, lock up switch, pyro gauge, stock turbo (need more air)

KWR · 10-27-2008, 02:17 PM

I just purchase the truck last Thrusday and haulled about 80 rolls of hay with it Saturday. Starting has not been a problem. I have veiw the code and cleared it and drove the truck for miles and all at once the miss fires and the engine light appears back on the dash.

jason · 10-30-2008, 09:10 PM

Quote:

Originally Posted by KWR

I just purchase the truck last Thrusday and haulled about 80 rolls of hay with it Saturday. Starting has not been a problem. I have veiw the code and cleared it and drove the truck for miles and all at once the miss fires and the engine light appears back on the dash.

What's your LP fuel PSI? Misfire huh? Do you have any power adders plugged in like a fueling box or a chip? If so unplug it and put your stock connecters back together, test your fuel PSI.

__________________
2000,4x4, quad, 315procompAT's, XZT+ to big hoss level 5, banks high ram, banks wastegate, 100hp injectors, 4" exhaust,TAG, ranch hand bull nose, leveling kit, auto with hughes perf. TC and VB, pillar gauges- trans, pyro, boost, fuel press, BHAF,

KWR · 11-17-2008, 08:37 AM

Thanks for the responce but this last weekend I install a new injector pump and resloved my problems.

Thanks again.

09-16-2008, 07:54 PM	#1 (permalink)
DavesCummins Cummins Fan Join Date: Aug 2008 Location: O'Fallon, MO Posts: 33 DavesCummins's Truck Pics	Code P1689? Hi, I am new to cummins forum and am looking for some help on my Grandfather's truck. It is a 1998.5 Ram 2500 24v and it dies on the road about every other week. It will start back up after sitting for an hour or so and sets code P1689 no communication between ECM and injection control module. I have used ALLDATA and checked the wiring harness for shorts or open circuits, and it says if all that check out then replace the ECM. The ECM is over $1000 from the dealer and I would hate to replace it if that is not the problem. Without checking it when it acts up, I cannot be sure that is the culprit. Any suggestions or help would be greatly appreciated. Thanks, Dave __________________ 2004.5 Ram QCSB AirRaid, TSTPowermaxCR, SmartyCR, MBRP 4" Turbo Back, Air Dog 150, Silencer Ring MIA, Stewart Warner Gauges, ATS Converter, Shift Kit, 2" lift, 315's on 06 wheels

10-27-2008, 01:27 PM	#6 (permalink)
KWR Newbie Join Date: Oct 2008 Posts: 3 KWR's Truck Pics	P1689 Problems Hi, I am new to cummins forum and am looking for some help on my truck. It is a 2001 Ram 3500 24v and it stops for a second picks back up, kinda like a miss fire. The code is P1689 no communication between ECM and injection control module. This is my first Dodge and this problem dose not seem to be easy to fix by what I read. Any suggestions or help would be greatly appreciated. Thanks, Ken

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09-16-2008, 07:59 PM	#2 (permalink)
SOUTHERN SMOKE GA CUMMINS CREW PREZ Join Date: Dec 2007 Location: ROYSTON, GEORGIA Posts: 1,727 SOUTHERN SMOKE's Truck Pics	start off with checking the wires to the injection pump, usually when you get that code, the pump is going bad, and is about to die... i would start there.... __________________ CLICK---> GEORGIA CUMMINS CREW 2003 CTD SMOKIN' BLACK BEAUTY... QCSB 4x4 6-SPD...AUTOMETER BOOST, FUEL, OIL...2ND GEN 24V INTAKE HORN...EDGE J/A... B&W TURN-OVER... QUADZILLA R/P...RECON L.E.D. RUNNING LIGHTS... RECON LINE OF FIRE...33X12.50 COOPERS...SRT-10 HOOD...XM RADIO...THEY CALL ME SMOKEY...

09-16-2008, 09:11 PM	#3 (permalink)
Ramtech Tech Specialist Join Date: May 2008 Location: Del Rio, TX Posts: 349 Ramtech's Truck Pics	i agree, 9 out of 10 times the code means the pump is going bye bye. just my .02

10-09-2008, 06:45 PM	#4 (permalink)
DavesCummins Cummins Fan Join Date: Aug 2008 Location: O'Fallon, MO Posts: 33 DavesCummins's Truck Pics	I replaced the injection pump and it fixed the problem. Thanks for the help! __________________ 2004.5 Ram QCSB AirRaid, TSTPowermaxCR, SmartyCR, MBRP 4" Turbo Back, Air Dog 150, Silencer Ring MIA, Stewart Warner Gauges, ATS Converter, Shift Kit, 2" lift, 315's on 06 wheels

10-18-2008, 07:42 AM	#5 (permalink)
jason Cummins Nut Join Date: Jul 2006 Posts: 405 jason's Truck Pics	I just got the code 1689 yesterday. I just had the fuel injection pump 2 weeks ago. I went and squeezed the connections on the harness for the pump and I found one that had just barely came out because when I squeezed it I felt it snap into place. So far so good no engine light and no codes. __________________ 2000,4x4, quad, 315procompAT's, XZT+ to big hoss level 5, banks high ram, banks wastegate, 100hp injectors, 4" exhaust,TAG, ranch hand bull nose, leveling kit, auto with hughes perf. TC and VB, pillar gauges- trans, pyro, boost, fuel press, BHAF,

10-27-2008, 01:36 PM	#7 (permalink)
mathews8pt Cummins Enthusiast Join Date: Jul 2008 Location: Cardington, Ohio Posts: 208 mathews8pt's Truck Pics	Most of the time this code means your injection pump is going out. Do you have any problems with starting it, or lack of power on an intermittent basis? Mine had this code, wouldnt start at all, replaced the inj. pump now its fine. __________________ 99' 2500 AEM intake, 4" exhaust, Holley Blue, Edge w/ Attitude, Coaltrain tranny, Coaltrain 150 sticks, new II so vp44, trac bars, lock up switch, pyro gauge, stock turbo (need more air)

10-27-2008, 02:17 PM	#8 (permalink)
KWR Newbie Join Date: Oct 2008 Posts: 3 KWR's Truck Pics	I just purchase the truck last Thrusday and haulled about 80 rolls of hay with it Saturday. Starting has not been a problem. I have veiw the code and cleared it and drove the truck for miles and all at once the miss fires and the engine light appears back on the dash.

11-17-2008, 08:37 AM	#10 (permalink)
KWR Newbie Join Date: Oct 2008 Posts: 3 KWR's Truck Pics	Thanks for the responce but this last weekend I install a new injector pump and resloved my problems. Thanks again.