Engine/Transmission (1998.5 - 2002) P1693

[StakeMan]

Does anyone know what causes this code?

 

[KatDiesel]

It means your over your designated 400hp limit. Please turn the hp back down for your own safety.







Seriously its nuthing to worry bout... ... it set that code when I purposely ran without a boost module for a while. It means a code was set in the PCM and the ECM.



If you know someone with Insite hook it up

 

[Rob Thomas]

Originally posted by KatDiesel

It means your over your designated 400hp limit. Please turn the hp back down for your own safety.

:-laf :-laf :-laf

 

[StakeMan]

I have my own software. Just curious if there is a known cause. I have had the over boost code before. I took care of that with dielectric grease.



I wonder if its not caused by fueling beyond 2700 rpm.

 

[Briar Hopper]

A faulty MAP sensor can cause that code to keep popping up. Had it happen to me. You'll need a 1 1/4" deepwell socket to remove it, and replace with a new one. How clever of Cummins to make it one size larger than Sears Craftsman has available at the store. :-laf

 

[StakeMan]

Haven't had any boost codes after the grease. I only get the 1693 by itself.

 

[tgbol]

The 1693 code is set when there is a lack of communication between the ECM and the PCM. It seems to pop up just about any time that another code is set.

 

[andrewkoperdak]

failure in comms between ECM and PCM. This is stated in the back of my DC tech manual.