PO-139 I had that sensor change 3 weeks ago and the check engine light came on again this morning.Thanks

I had that problem with mine it was the throttle position sensor. take back to dealer a code should show up if it is the sensor they can reset it but that would fix the problem need to change the sensor. Expensive fix it is part of in take manifold you change the whole manifold.

don't trust any people for engine oil change take oil level after they change it.

If you can get the actual codes we can better advise you.

Check the hose going to the pvc valve,could be leaking.

CHECK TURN SIGNAL FUSE.IT COULD BE BLOWED OR YOU HAVE FAULTY TURN SIGNAL SWITCH.BECAUSE BACK LIGHTS AND TAIL LIGHTS SHARE SAME CIRCUIT WITH TURN SIGNAL SWITCH.

The message light does not check all internal systems.

Have someone at a local parts store do a free code scan for you, this will tell you what code is making the light come on, and what that code indicates is wrong.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

its a faulty speed sensor or plug to speed sensor could be dirty

Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the Check Engine or Service Engine Soon lights to tell you that there is a problem and you should have the car diagnosed and repaired. Not fluid related, but could be a small problem that's easy to fix now. Even a loose gas cap can turn the light on. Have a code scan, that's the starting point.

This sounds like a problem with a sensor on the engine or transmission. You may want to have your car taken to a diagnostic specialist where they can retrieve "engine codes". Your check engine light is informing you of a possible failure of a sensor or switch in relation to your vehicle's computer. A special computer will be capable of retrieving engine codes and a competent mechanic should be able to decipher and perform whatever repair is necessary.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_62314e5b2470e8b5

Most likely cam and or crank sensors. Have it scanned to be sure.