P0128 Code Thermostat System Malfunction - Page 3 - Kia Forum
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post #21 of 29 (permalink) Old 04-14-2016, 10:32 AM
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Originally Posted by Memphis_Sean View Post
So no known TSB's, other issues with my model and this code?
Not exactly, let me Explain:

The issue was addressed in the
"Tech Times" section of the www.kiatechinfo.com website long time ago; But instead of a TSB or a regular recall, it was covered as a Newsletter article; however I have the number of the Document:

KT2005022826

The Kia Document KT2005022826 covers that temperature / code P0128 issue, addressing that the problem and the solution is pretty simple; the fix was listed as a Flash of the car's ECM in order to load revised thermostat monitoring logic. That's it.

The local Kia dealer is unable to do that, somehow... so I simply don't care for the check engine light that comes to visit and goes unexpectedly, like a boring visitor.

So, mi kind suggestion is: Try to get the ECU updated at your local Kia dealer, before throwing dollars on such money pit of thermostats, without resolving the issue.

Kind Regards.


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post #22 of 29 (permalink) Old 04-14-2016, 05:22 PM Thread Starter
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Just not sure if 15 degrees is significant enough to overwork the engine, cause it to overheat, etc. But with that said, not allowing the engine to reach optimum tempature is also bad. But according to the info you posted it should be using a 195 tstat :?

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post #23 of 29 (permalink) Old 04-14-2016, 08:09 PM
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Question Have you Read my previous posts here?

Very kindly let me suggest you to re-read again all the information I shared here on my latest posts, because I stated that the change of thermostat, from 180º F to 195º F seemed to Not solve the P0128 code / Check engine light issue, not only on our 2000 Sephia, but also on other Sephias and Spectras with same issue, as you can read here in the forums on older threads; because the problem is not the Thermostat, nor the Temperature themselves; the problem is on the ECU, which needs a Software update, as stated on the Kia Document KT2005022826.

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post #24 of 29 (permalink) Old 04-15-2016, 02:23 AM Thread Starter
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Any idea if Kia will do the software update if I take it in?? And wouldn't the software update still necesistate installing a 195 tstat??
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post #25 of 29 (permalink) Old 04-15-2016, 02:25 AM Thread Starter
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Any idea where I can find Kia Document KT2005022826 for reference??
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post #26 of 29 (permalink) Old 04-15-2016, 02:33 PM
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Exclamation

I delayed in answer on purpose, because I was hoping that someone else with more experience with Kia Dealers / Flashing the ECU, could add experience to this thread...


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Any idea if Kia will do the software update if I take it in?? And wouldn't the software update still necesistate installing a 195 tstat??
I Guess not...

As I already told you, I have not done the ECU flash with software update, because our local Kia dealer has not answered to my solicitude yet, sadly.



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Any idea where I can find Kia Document KT2005022826 for reference??
As I already wrote, it is on the Kia Tech information website; whose web link is on my previous post, above.

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post #27 of 29 (permalink) Old 04-15-2016, 03:14 PM Thread Starter
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I'm on mobile, so I missed that post. Unfortunantlly, Kia started charging for that tech site. I'll have to see if I can get that article somewhere else. Not sure the dealer would do it for free anyways.
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post #28 of 29 (permalink) Old 04-15-2016, 04:28 PM
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As with most recalls, they're open for a limited time, after which you'll be charged for whatever service is involved, or sometimes left to the individual dealers descretion, so best you contact your local dealer and ask if they'd can do it, and it the won't do it free of charge, what's the charge.

I'd expect you'll walk away with at least a diagnostic charge, and that diagnostic might well reveal that you do not need any updates, .........or you could replace the thermostat (very cheap) and take it from there.
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post #29 of 29 (permalink) Old 04-15-2016, 05:02 PM Thread Starter
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Originally Posted by ron1004 View Post
As with most recalls, they're open for a limited time, after which you'll be charged for whatever service is involved, or sometimes left to the individual dealers descretion, so best you contact your local dealer and ask if they'd can do it, and it the won't do it free of charge, what's the charge.

I'd expect you'll walk away with at least a diagnostic charge, and that diagnostic might well reveal that you do not need any updates, .........or you could replace the thermostat (very cheap) and take it from there.
Yeah, I'm not real excited about taking my 16 year old car with all its many inperfections to the dealer. That check engine light just bothers me...and the car runs too good and within temp range to really worry or just start replacing stuff. I may just do it for peace of mind soon though.
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