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Mar 22, 2011 | 03:30 PM

#11

chad83181

Diesel Enthusiast

iTrader: (1)

Joined: Mar 2010

Posts: 271

Likes: 23

From: Billings,Missouri

1689 is a companion code that tells you another one is stored I believe without looking.

Mar 22, 2011 | 05:04 PM

#12

Red_Rattler

High Tech Redneck

Joined: Nov 2007

Posts: 6,730

Likes: 496

From: Columbus WI

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.

Mar 26, 2011 | 09:35 PM

#13

crazycooter

Diesel Enthusiast

Joined: Mar 2009

Posts: 349

Likes: 7

From: Wray, CO

1693 is your most common companion code... your fuel pump relay is in your pcm...

---AutoMerged DoublePost---

your 1689 is probably left over from your vp44 swap out.

Last edited by crazycooter; Mar 26, 2011 at 09:35 PM. Reason: Automerged Doublepost