Nissan quest, service engine soon light comes on-----how to reset it?

SOURCE: service engine soon light

The light comes on when the car's computer detects that something has an incorrect reading that is sending that incorrect reading from the sensing unit to the computer.

Here's how i would attempt to solve it. To reset an service engine soon light take the positive terminal off of the battery and let it drain all the voltage and currents in your vehicle. Like try turning on your radio and turning your car over while the positive terminal is taken off of the battery terminal.

I would say let it sit for atleast 15 minutes then put it back on and start the car back up. If the light still comes back one then you have a small problem that could be many different little things

Check to see that your gas cap isn't worn out and still keeping a seal so when you take it off you should hear air escaping from it

Could be a filter in your fuel tank.

Could be o2 sensors

The list could go on, but to make sure before you start spending a huge amounts of money go to a shop and get them to plug in a scanner into your car to see what exactly the code is.

Good luck bud!

SOURCE: 'service engine soon' light

HI
without using the scan tool you can do it by disconnected the the battery for ( 24 h) to reset it or to ( 5 m) to reset the service engine light but the fault sty in the memory

WITH MY BEST WISHES

SOURCE: service engine soon light 04 nissan titan

make sure the gas cap is tightly sealed. Inspect the gasket on the gas cap

SOURCE: Nissan Quest/Knock Sensor

n ot enough info to determine....... now what speed sensor.. one is the vehicle spped sensor to operate the speedodometer.. the other is for the engine speed for timming of motor..

SOURCE: Service engine soon lights on (Nissan Quest 2007)

This is most likely the O2 Sensor however, that light may also come on for a vacum leak or anyone of a number of other sensors. Take the vehicle to Auto Zone and ask them to use a code reader on it and tell you what the code is for. If the code is for O2 sensor as I suspect the part will cost about $40 and take maybe 20 minutes to replace your self. ($40 for part + 5 to 10 for the special socket) If it shows anything else you may want to take it to a mechanic to have the vehicle diagnosed.