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GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Dtc p0125

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Old 09-05-14, 12:09 PM
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PTYGS400
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Hello everyone. My GS400 keeps throwing these codes. Coolant temp is always between 190-195 °F. How come it says "Insufficient coolant temperature for closed loop fuel control"
Long term fuel trims are about 4% on one side and 7% on the other. Thanks in advance!
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Old 03-16-15, 01:33 PM
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StanTycoon
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i am going through the same problem , i just changed thermostat, coolant temp sensor, and installed 4 new o2 sensors. Dont know what else to do
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Old 03-16-15, 03:00 PM
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http://engine-codes.com/p0125_toyota.html
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Old 03-17-15, 02:58 AM
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SC4Paulo
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EDIT: let this thread die. its from 2014. sorry i bumped it,
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