Dodge Diesel - Diesel Truck Resource Forums

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- 24 Valve Engine and Drivetrain (https://www.dieseltruckresource.com/forums/24-valve-engine-drivetrain-89/)

- - Code 1690 def. (https://www.dieseltruckresource.com/forums/24-valve-engine-drivetrain-89/code-1690-def-249290/)

ops_8_8

08-05-2009 10:24 PM

Code 1690 def.

Looking for a definition for code 1690...
Ran a scan tool on my rig today, but no definition cam up with the code.

ops_8_8

08-05-2009 10:34 PM

Found this on Edge website
P1690 CKP Sens Does Not Agree with ECM CKP Sens

Anybody seen this one yet?

KennyG

08-05-2009 11:59 PM

Code P1690 - Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor.
Brief Description: Problem in fuel sync signal. Possible injection pump timing problem. Low power, engine derated, or engine stops. It could be that you have a bad Crankshaft Position Sensor or "CKP". The ECM interprets the sensor input to determine the crankshaft position, The ECM then uses this position , along with other inputs, to determine injector firing sequence and fuel timing. Hope this helps!! :)

ops_8_8

08-06-2009 01:26 AM

Very helpful... Thanks a lot!

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