In The Nissan I owned That Light lights up every 15, 20 or 30,000 miles depending on the model or year of the Car. There is usually nothng wrong, It is away for the Service Dep. to get you to bring the car in. Most Cars have either a reset button or you have to hook up a diagnostic compter to reset this. They sell a device to reset these for almost any model of car made. Or you might be able to find how to reset t online by doing a search for the model and year of your car.
Water in engine-head gasket most likely.
A bad thermostat can cause overheating in a Nissan Frontier when the air conditioning is turned on. A bad compressor can also cause this.
A Nissan Frontier may be overheating because the radiator is cracked. A thermostat failure can also cause it to overheat.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
I had the same thing happen , i just kept driving it and it cleared itself!
A bad transmission gear can cause your 1999 Nissan frontier to shift hard. Low transmission fluid can also cause the transmission to shift hard.
To reset the check engine light on a 2004 Nissan Frontier, you can disconnect the battery by removing the negative terminal for about 15 minutes. This will clear the engine control unit's memory, including the check engine light. Alternatively, if the underlying issue has been resolved, you can use an OBD-II scanner to erase the trouble codes that trigger the light. Always ensure that the root cause of the check engine light is addressed before resetting it.
If it is not speced correct for it then, yes.
yes
yes
With a scan tool after repairing the cause of the fault code.With a scan tool after repairing the cause of the fault code.
If the system has a full charge then the thermister is most likely the cause for it not working.