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go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1207
Experience:  Technican with 20 years experience focused on engines and electrical.
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I have a 2006 Freightliner with a Detroit engine. The

Customer Question

I have a 2006 Freightliner with a Detroit engine. The diagnostic says the instrument controller is bad, code 140s254 12.
JA: We'll do all we can to help. Tell me a bit more about what's going on so the Heavy Equipment Mechanic can help you best.
Customer: The temperature gauge will go all the way down and then the high temperature lights and buzzer will come on. The the temperature gauge will go to the high side and then slowly return to normal temperature.
JA: Is there anything else the Heavy Equipment Mechanic should be aware of?
Customer: Not that I can think of.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  go-west.. replied 1 year ago.
Good evening
Had a look at the code and it says to replace the ICU, I know these clusters are costly so if you can live with the problem your having then run it. It not then replacement would be necessary
Expert:  go-west.. replied 1 year ago.
Let me know if you have any other questions.

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