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Old 12-09-2009, 10:57 AM
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Join Date: Feb 2008
Posts: 223
2005 C230 Komp. Code P0128

I have just purchased a 2005 C230 Kompressor with a code P0128. What could my problem be. I have read that alot of people say a simple thermostat swap will cure the problem but I have read where alot of people say that it isn't a thermostat issue. Just wanting to see if I could get a definite answer on what this particular code means and what part is faulty. I have tried resetting it time and time again but it just comes back after about 15 minutes of driving. All help is appreciated.

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Old 12-09-2009, 11:53 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
90-95% of the time that code does mean a bad t/stat.

The other 5% is either the temp sensor OR wiring issues.
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Old 01-19-2010, 10:22 PM
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Join Date: Feb 2008
Posts: 223
Thanks alot it was indeed the thermostat.

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