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Cat Man
Cat Man, Cat Engine Expert
Category: Construction and Road Equipment
Satisfied Customers: 8426
Experience:  I am ASE Master Certified.
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When I start my cat engine the check engine light comes on

Customer Question

When I start my cat engine the check engine light comes on also protect eng. light. I get code that says "ECU low coolant. What does it mean ?
Submitted: 7 months ago.
Category: Construction and Road Equipment
Expert:  Cat Man replied 7 months ago.
Thanks for asking your question. I will try and help you out.
ECU low coolant indicates the engine computer or ECU is detecting a low coolant level condition.
I would first check the coolant level if you haven't already. If the coolant is indeed not low. You most likely have a faulty low coolant level sensor. I would consider replacing it.
Please reply back if you need more help or have more questions. I am happy to assist.
Expert:  Cat Man replied 7 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.

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