P1689,P1693,P0237 - Diesel Bombers



24 Valve 2nd Gen Dodge Cummins 98.5-02 Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps
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Old 04-24-2011, 11:01 AM
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mad P1689,P1693,P0237

Noticed a few weeks ago my crusie control stopped working. Since last weekend i have had intermittent starting problems. The following codes appear on the code reader: P1689, P1693, P0237. After i get the truck started, it runs fine, although it seems to be lacking a litlle power. My truck only has 70000 miles on it and it seems a little early for the injection pump to be going out? Any suggestions?
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Old 04-24-2011, 11:09 AM
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P1689 - No communication between the Injection Pump and ECM (Not a good thing!)
P1693 - Companion Code, it will appear when there is a code in a controller
P0237, Boost sensor low voltage signal

What kind of modifications if any are done to the truck? Once it is running, how does it perform?
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Old 04-24-2011, 11:15 AM
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It has a Banks Power Pack, full exhaust from the turbo back and a High Ram Intake. It seems to run fine but feels like it is lacking power>
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Old 04-24-2011, 11:44 AM
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I strongly suggest getting a fuel pressure gauge on that truck. Even bone stock they barely have enough flow to the injection pump. Too little flow (pressure) and the $1000+ vp44 is toast. Knowing fuel pressure can determine how well the engine will perform. 10 PSI at WOT is the minimum value your looking for.
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Old 04-25-2011, 02:34 PM
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X2 on that
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Old 04-25-2011, 09:08 PM
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I get the same codes, except the P0237. I have a new VP44 and Airdog 150. The codes only come up when the temperature outside is over 50 degrees. I have no idea what this is. Any idea's?

Jim
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Old 04-27-2011, 02:56 PM
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check to make sure all your connections are good on ur chip... i had a head gasket done on my 2002 dodge and had the same codes show up.. turns out they forgot to put a ground wire back on for my edge tuner.... hooked the ground back up cleared the codes and havent had anything since.
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Old 04-27-2011, 03:16 PM
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good idea
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