TSB update after error code comes up to replace thermoset after thermostat already replaced.

No. The engine coolant water pump is a wear item so just replace it fails. If you check for weeping or bearing sounds and change it if you notice anything like that you'll get it before it fails.

Do you mean 100,000-150,000 miles?

Maybe in as much as you then don't have to worry about the pump failing at which point you then continue to drive and cook your head and gasket.

 

If you know what error code and you're just not telling us, relent. We can't bear the suspense.

If the seller knows what error code and just isn't telling you, that's for you and the seller to work out.

An error code looks like a letter P, C, B, or U, followed by a digit 0, 1, 2, or 3, followed by three more places that are all digits 0-9 or letters A-F.

 

That'll be a big start. These cars are some of the most reliable on the planet water pumps and things like that on the generation to don't just literally usually go out they wear out and people in tune will hear a few noises before they stop working.and theyres an overheat light to help . Nose helps too the smell of extreme Ice heat is memorable to some.

 

Actually, the water pump is a known issue. Had to replace mine at 50K

 

I am baffled and I have no answer. That code is not in (at least this old edition of) the 2006 repair manual that I am looking in.

It might be in an up-to-date edition online:

Toyota Service Information and Where To Find It | PriusChat

 

Might be able to speculate if we knew what the TSB number was.

Really, any code is just programming. The ECM turns on a light and saves a code when certain inputs reach a programmed threshold value.

If the engineers figure out that some codes are incorrectly setting, or are irrelevant, then they will release new software to fix the "bug" and change how that particular code sets (or change other outputs to prevent the code set condition).

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