CODE P0128

2003 TOYOTA CAMRY
83,500 MILES • 4 CYL • 2WD • AUTOMATIC
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MGAINER
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i took my car to and got a diagnostic reading with the code p0128 coolant temp below thermostat regular temp. do you know where i can start to resolve this issue.
Mar 9, 2010 at 7:09 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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These cars had a common problem with the coolant temperature sensor going out. I would start by replacing it. Here is a guide to get your started.

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

Here is where it is in your car (below) I have both engines.

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Oct 10, 2017 at 2:50 PM
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SATURNTECH9
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I would be replacing the thermostat for that code that's a universal code for many makes and models for a bad thermostat I have replace a thermostat for many makes and models for that code.
Oct 10, 2017 at 8:06 PM
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SATURNTECH9
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There's the stats for confirmed fixes to back up my thoughts on it's a bad thermostat.
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Oct 10, 2017 at 8:09 PM