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#11

03-22-2011, 03:30 PM

chad83181

Diesel Enthusiast

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

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#12

03-22-2011, 05:04 PM

Red_Rattler

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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.

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#13

03-26-2011, 09:35 PM

crazycooter

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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; 03-26-2011 at 09:35 PM. Reason: Automerged Doublepost

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