Can a bad temperature sensor cause a check engine light to come on?
Alongside the signal that your engine is overheating, you may see your check engine light come on if your coolant temperature sensor is failing or has failed. If your car’s computer senses a problem with the signal your sensor is sending, it may trigger the check engine light.
What does flashing red coolant light mean?
If the coolant red light is flashing, then that means that a sensor is not responding to the computer system at that time. If the resistance stays the same on the temperature sensor or there is high resistance on the level sensor, then one or both sensors will need replaced.
Can o2 sensor cause flashing engine light?
Cause. A flashing check-engine light generally indicates that there is a failure in the emission control system. An oxygen sensor reads the air and fuel mixture and lights up when it is out of range.
How long can you drive with the coolant light on?
If the coolant is low but above the minimum mark, then you are still fine to run the car for a few days, but if the coolant is below the minimum mark, please do not even try to drive your car like that so you don’t knock your engine. You need to top up the coolant.
Why does my coolant light keep flashing red?
If the coolant red light is flashing, then that means that a sensor is not responding to the computer system at that time. Check the coolant temperature sensor, and the coolant level sensor and make sure that they are plugged in. Remove the harness to them and check the sensor for resistance.
When do you Know Your coolant temperature sensor is faulty?
One of the very first indications that you might have a faulty coolant temperature sensor is when you notice a drop to your fuel economy. The reason this happens is as follows: The faulty sensor might send a wrong signal to the computer, leading to a miscalculation in the engine timing and fuel calculation.
What does a flashing check engine light mean?
A flashing check engine light means that the problem occurs at the moment and it’s most likely a more serious problem like a misfire. It’s not recommended to drive with the check engine light flashing or ON.
How does the coolant sensor work on a car?
Upon measuring the coolant temperature, the sensor passes on a signal to the car’s computer. This signal is then used to adjust both the engine timing and fuel injection. This allows for optimal engine performance. If the computer detects that the engine is heating up too much, the performance settings will be adjusted to prevent overheating.