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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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code 1690?

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Old 07-22-2010, 06:03 PM
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Default code 1690?
Is their a way to fix the code 1690 without replacing the injection pump. it seems like my truck has a little miss at idle. Or is the code 1690 even a problem. Thank You.
 
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Old 07-22-2010, 07:35 PM
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a p1690 is somthing wrong with your malfunction indicator light
 
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Old 07-22-2010, 08:37 PM
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anyone else know what this code is?
 
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Old 07-22-2010, 09:26 PM
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P1690 Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor

Thats what I found by Google searching it. This seems to have quite a bit of knowledge in it as well:

Diesel engine, Code P1690 Fuel Injection Pump C... - JustAnswer
 
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