Question about 2012 Hyundai Genesis 3.8 Sedan 3.8L V6 8-speed Automatic

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Engine light on 2012 hyundai genesis sedan

Getting code po128

Posted by tony72vette on

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I did a quick Google search and found P0128 may indicate a stuck thermostat. The engine is not warming up properly. There are other causes: A code P0128 may mean that one or more of the following has happened:
* Low engine coolant level
* Leaking or stuck open thermostat
* Faulty cooling fan (running too much)
* Faulty coolant temperature (ECT) sensor
* Faulty intake air temperature (IAT) sensor
I got most this info from another thread on Fixya. I hope that it helps you.

Posted on Mar 29, 2014

  • tony72vette Mar 29, 2014

    thank you for your help

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