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Cummins 8.3 codes

Tom_Barb
Explorer
Explorer
This is a cummins 8.3 350 the road relay 4 is showing this message

" SID 237 active 3
engine controller
subsystem ID # 237
unidentifiable. Fail Mode"

what does this mean?

engine starts and runs find.
2000 Newmar mountain aire 4081 DP, ISC/350 Allison 6 speed, Wrangler JL toad.
8 REPLIES 8

Ray_IN
Explorer II
Explorer II
Thank you for explaining the solution!
Cummins could not connect with or read my ECM last July until they uploaded new software to the ECM.
2000 Winnebago Ultimate Freedom pushed by a 2013 Chevy Silverado K1500 And so, my fellow Americans: ask not what your country can do for you — ask what you can do for your country.John F. Kennedy 20Jan1961

Tom_Barb
Explorer
Explorer
WAFlowers wrote:
So the problem was what I said. Glad you got it fixed.


🙂 🙂
the fault code was what threw us.

Cummins . com
didn't know what it was..

it takes a cummins insite computer to give the proper read out.

the little garages don't have them, I canvased 4 cummins dealer before we found one.
2000 Newmar mountain aire 4081 DP, ISC/350 Allison 6 speed, Wrangler JL toad.

WAFlowers
Explorer
Explorer
So the problem was what I said. Glad you got it fixed.
Bill and Willemina Flowers
George, Sammy and Teddy (the dogpack)
2008 Tiffin Phaeton 40QSH
2005 Keystone Monata 3400rl (5/21/11 to 9/9/17)
(Was in a 2000 Coachmen Catalina Sport 220RK)

Tom_Barb
Explorer
Explorer
Fixed it

faulty terminal on the manifold heater circuits
there are two fuses protecting the heater relays and the two heaters, one had a bad connection
2000 Newmar mountain aire 4081 DP, ISC/350 Allison 6 speed, Wrangler JL toad.

Tom_Barb
Explorer
Explorer
Cummins insite diagnostic computer --says the intake manifold heater is not heating..

results later. //
2000 Newmar mountain aire 4081 DP, ISC/350 Allison 6 speed, Wrangler JL toad.

Ray_IN
Explorer II
Explorer II
Perhaps this website will be helpful.
Strike that; no 237 code listed. Sorry.
2000 Winnebago Ultimate Freedom pushed by a 2013 Chevy Silverado K1500 And so, my fellow Americans: ask not what your country can do for you — ask what you can do for your country.John F. Kennedy 20Jan1961

Tom_Barb
Explorer
Explorer
As come we find cummins doesn't know that SID 237 means either.. but we still have the light. 😞
2000 Newmar mountain aire 4081 DP, ISC/350 Allison 6 speed, Wrangler JL toad.

WAFlowers
Explorer
Explorer
I believe this means that the air intake heater grid is not fully coming up to temperature. It is used when starting the engine when it it cold. However you need to verify what I said. The best thing would be to call Cummins.
Bill and Willemina Flowers
George, Sammy and Teddy (the dogpack)
2008 Tiffin Phaeton 40QSH
2005 Keystone Monata 3400rl (5/21/11 to 9/9/17)
(Was in a 2000 Coachmen Catalina Sport 220RK)