CODE P0128

2003 TOYOTA CAMRY
83,500 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
MGAINER
  • MEMBER
  • 1 POST
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
Advertisement
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
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
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Oct 10, 2017 at 2:50 PM
Avatar
SATURNTECH9
  • CERTIFIED EXPERT
  • 30,869 POSTS
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
Advertisement
Avatar
SATURNTECH9
  • CERTIFIED EXPERT
  • 30,869 POSTS
There's the stats for confirmed fixes to back up my thoughts on it's a bad thermostat.
Image (Click to enlarge)
Attached Media
Oct 10, 2017 at 8:09 PM