A faulty gas cap can cause this symptom.
Answerlow oilfaulty sensor
you should take it to AutoZone if there is one in your area. They do a check/service engine light analasys for free.
Answercheck the gas cap, if it is not on tight ( let it click 3 times) the engine light will come on. Good luck. AnswerI have same problem After they reset it at the service ,come back on after about three weeks .Theye found pin hole in the sim on the fuel tank.($500+ TAX out off warranty Nissan does not help is not their problem )Looks like a lot of people has similar problems.My "SERVICE ENGINE SOON" light came on after a 30K service. I did as much research as you can imagine. The bottom line: I tightened the gas cap. Granted, this was the simplest solution. However, it took a full tank of gas before the light extinguished. At least it was something simple.
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.
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.
several things 1. no radiator coolant 2. thermostat is bad 3. needs new water pump 4. make sure engine/radiator fan is running