What is mean The P2096 error code?

@geenhammod P2096 stands for “Post Catalyst Fuel Trim System Too Lean". That means your Kia is getting too much air and not enough fuel which creates a lean condition.

This could be caused by the fuel system not delivering enough fuel (i.e. bad fuel filter, fuel pump or fuel injectors, failing Mass Airflow sensor) It can also be caused by a engine vacuum leak or an exhaust leak, a bad O2 sensor as well as a bad catalytic converter.

Let us know what exact year, engine size, and mileage for your Kia is so we can try and find more specific model information on how to proceed with the troubleshooting. Also, let us know how it runs since that might help to narrow it down as well.