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Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 8823
Experience:  I am ASE Master Truck Certified.
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My check engine light is on and the code is saying ECU 12 8.

Customer Question

My check engine light is on and the code is saying ECU 12 8. I have a 08 Cascadia
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Cat Man replied 1 year ago.
Hi. Thanks for asking your question! I will try and help you out.
Code 128 indicates there is an engine diagnostic code. Unfortunately it does not say what the code or problem is. In order to determine what the code and problem is, a service tool will be needed to read the ECM. I am sorry. I wish I had better news.
Please reply back if you need more help or have more questions. I am happy to assist.
Expert:  Cat Man replied 1 year 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.

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