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Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 8413
Experience:  I am ASE Master Truck Certified.
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I have 2006 Freightliner columbia with C15 cat. Check engine

Customer Question

I have 2006 Freightliner columbia with C15 cat.
Check engine light is on and is showing a code
ECU 128 SID 290 Fail 07The truck is running fine nothing out of the ordinary. Anyone one what this might be?
Submitted: 4 months ago.
Category: Medium and Heavy Trucks
Expert:  Cat Man replied 4 months ago.
Thanks for asking your question. I will try and help you out.
128 indicates there is an engine code. Engine code 290-7 is defined as intake valve actuator #6 is not responding. I have seen this many times
This code is caused by either a faulty Iva solenoid or faulty Iva housing
I always replace the solenoid first. If the problem continues, you'll need to replace the housing.
Please reply back if you need more help or have more questions. I am happy to assist.
Expert:  Cat Man replied 3 months ago.

Hey. I just wanted to see how things were going. Please let me know if you need more help. I am happy to assist. If my information was helpful, please leave a good or higher rating so that I receive credit. Thanks.