Keeping send wrong info to CPU , reminding controller the engine is over heating . The controller say OK, I need do something to protect the engine ,and command engine to shut down.
Why is it (temperature sensor is bad)? Cause once u unplug the temperature sensor , the code 197 disappear right way ,and the engine run without any trouble . This clearly indicates the sensor not function properly.
Actually , If coolant level is OK and no obvious leaking sign, yet engine running die because of " over heating" code, logic conclusion is the sensor is bad , u even don't bother do any check .
