Service engine soon light poppped on again today. Came on before then went off oil pressure is around 20lbs idle seems low and ideas of what this could be?

 

You need to pull the code.

 

Now my next ? Would be what do they use to read codes obdII reader and where do they plug in I know most are under the steering column on the left side of the steering wheel but I can't find mine?

 

Yes they would use an OBDII scanner just like in every car manufactured after 1996.

Your OBDII port is located drivers side above your right knee

 

You could also go to AutoZone if you can't find it...they will be able to show you/do it for you. As far as your oil pressure is concerned, 20psi isn't bad. It all depends on how hot the car is, and what your car is idling at. As long as your oil isn't low you should be fine I wouldn't worry about 20psi at idle.

 

Good deal thanks a lot guys the light went off already and it isles fine. Oil psi is around 20ish after it warms up sits right around 80-100 when its first started.