First fix whatever the problem is. That alone oughta turn the light off. Otherwise, either disconnect the battery for a minute or so, or remove the 15A EFI fuse #12 in the engine compartment fuse box for a minute or so.
engine light
With a scan tool or by unhooking the battery.
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.
Change the oil.
The only way to reset the sensor light on a 1985 Nissan pickup truck is to disconnect the sensor wiring. After 60 seconds, put the wiring back in place.
That is the same as the check engine light. You will need to have the system checked for codes to know possible causes.
There are hundreds of different codes that can cause the check engine light to come on. It needs to have a code reader hooked up to find out the specific code. Most auto parts stores will do this for free.
Check at the battery with a volt meter, Should have over 14 volts when engine is running. If not, possibly have to replace the alt. or check all the wires.
a plug misfiring would cause the rough idle and check engine light or if u changed the plugs and wires u could have put the plug wires in the wrong order
the dipstick is near the back of the engine compartment. Check while at running temp
Virgile Reset was born on 1985-08-03.
That is exactly what it is suppose to do. This allows you to check and see if the lights are working properly. If they did not come on and then go off when you start the engine, you would never know if the bulbs were working properly.