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catmastertech
catmastertech, Technician
Category: Heavy Equipment
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Experience:  19 years Cat, 3 years Case
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I have a Detroit Series 60 and I am getting 25 and 31 .... Does anyone

Customer Question

I have a Detroit Series 60 and I am getting 25 and 31 .... Does anyone know what theese codes are?
Submitted: 7 years ago.
Category: Heavy Equipment
Expert:  catmastertech replied 7 years ago.

Try this brochure from Detroit.

http://www.roamingnomads.com/detroit_diesel/Series_60_EGR_Tech_Guide.pdf

catmastertech, Technician
Category: Heavy Equipment
Satisfied Customers: 2272
Experience: 19 years Cat, 3 years Case
catmastertech and other Heavy Equipment Specialists are ready to help you
Expert:  northern mechanic replied 7 years ago.
code 25 my book say its a unreserved code 31 is

Aux. Output #3 Open Circuit (High Side) - S3 whitch is sensor out put.

i hope this helps

ricky

Expert:  Tim replied 7 years ago.

Hello,

My name isXXXXX will try to help you out, DDEC 3 code 25 actualy means there is no active or inactive codes, no trouble shooting needed. Code 31 means the engine brake low or medium circuit has a open or is shorted to ground, there are a whole list of things to check, but in short, check wiring, comming up and behind the engine going up to the head for rubbed wires, Also a common area for this would be a diconnected wire to one of the jake solinoids under the valve cover, they just use spades, I have found this a few times... By the way if you dont have engine braks, the engine is configured for them and it shouldnt be , this will take a dealer data change... hope this helps