trouble code P0128 - Mazda Forum
 
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post #1 of 2 (permalink) Old 12-26-2016, 02:12 PM Thread Starter
lrw
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trouble code P0128

Coolant temp below thermostat regulating temp, how do I fix?
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post #2 of 2 (permalink) Old 04-03-2017, 12:45 PM
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Hi Irw,

We see this here at work fairly often. Usually its a PO126 and PO128 code. In most cases it just needs a new thermostat. Sometimes we put in a new sensor also.

Good luck, Mark

Certified Mazda Mechanic
Hiley Mazda of Hurst, TX
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