The engine needs to warm up in a Window of time. If the engine does not reach the temp it wants in the window of time, the computer sets a p0125 code.
In 96, the prom was updated with a different window of time in freezing temps.
Either.
1) Your thermostat isn't warming the engine as fast as it should. Thus, the sensor is correct, adn the computer is making the correct call.
2) The sensor is giving the computer bad intel, thus the computer is making the wrong call because it has bad information.
3) The computer is still using the only program, where its getting the right info fromt he sesnor, but is basing a failure on what it is told in its programming. The computer is making the right call based on what it knows...But what it knows is wrong.
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