code scanner reads PO128

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Old 01-12-09, 10:58 AM
RandyAsselstine's Avatar
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code scanner reads PO128

I have a Montana and the engine light comes on. The code is PO128-which reads--Coolant temp below thermostat regulating temp--anyone know what that means and what has to done to fix it?
 
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Old 01-12-09, 02:33 PM
HotxxxxxxxOKC's Avatar
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Replace your thermostat.

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