Damn P0128 - Subaru WRX Forum
 
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#1 Old 04-05-2014, 08:44 AM
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Damn P0128

So I keep getting warning lights that are signs of limp mode. Although the car still performs normal IMHO. Last night I checked the code on my AP and got P0128, which relates to coolant and thermostat.
My cruise will blink and my cel is on along with my traction control light.
This only seems to happen when it is wet out (raining or snow is melted making wet roads).
This is the third time this has happened to me this year, but first time since owning my AP. It cleared without a problem, but I'm sure it will be back.

At first I thought it was a wet MAF before I could pull the code. Now I'm maybe thinking my thermostat is stuck open or something.
Anyone else have this issue?

2011 limited w/ 43,000

Randy-
2002 blaze WRX- sold:(
2004 Wrx-sold
2011 Wrx limited
99 Fozz- sold
Eagle eye crew
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#2 Old 04-05-2014, 02:04 PM
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3 possible causes. Stuck/sticking open thermostat. Wrong coolant to water mixture . Bad fan circuit. The fan should not stay on more than 3 consecutive minutes at a time.

Adair
06' wrx tr
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#3 Old 04-05-2014, 02:45 PM
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I'm guessing it's the thermostat. I haven't added anything in right months.

Randy-
2002 blaze WRX- sold:(
2004 Wrx-sold
2011 Wrx limited
99 Fozz- sold
Eagle eye crew
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