”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 .“
如果你车子的thermostat 失效,你看COOLANT LEVEL还是正常的,也没漏,你的车子还是在过热运行。你正常的SENSOR保护了你的车子,让发动机保护性熄火。
所以你还要看看各处冷却水的管道手摸上去是否正常热度,不能只看COOLANT LEVEL。