I have a 2006 kia optima codes are showing trim malfunction

It means:
P0365: Camshaft Position Sensor 'B' Circuit Malfunction Bank 1
One website I looked at did not even list this engine code but I went to the following link and it was listed:
https://www.autocodes.com/make/kia/9
If you took it to a Kia dealership, I would talk to the service manager or his/her boss to get a definitive answer.

code p0170 refers to two problems
fuel trim bank 1 --malfunction
heated oxygen sensor(HO2S) 3 bank1 --circuit malfunction
for the first error==causes-- intake leak --AIR system---fuel pressure /pump---injectors--EVAP canister purge valve---HO2S
for the second one ===causes=--wiring--HO2S---ECM
The explanation of fuel trim is long winded and you may get some typo errors but I think that you will get the idea
short and long term fuel trim refers to the strategy used to reduce exhaust emissions after a basic computation of injector period, using engine load as a major parameter
both front and rear oxygen sensors signals are used to fine tune the air/fuel mixture by increasing or decreasing the injection period =/- 25% above or below the basic level
any fault requiring a correction beyond this level will result in a fault code being logged ( in this case p0170)
the fuel trim will oscillate the injection period =/- 5% above or below the mean level level A
manufacturing and in-service tolerances of load sensors (MAP,MAF, VAF) and injectors in particular and faults such as intake leaks( vacuum hoses from vent controls and transmission) will affect the air/fuel mixture and cause the trim to compensate
an air intake leak for instance would increase the injection period increasing for example to 115-125%. this level will also oscillate +/- as before level B
this new short term fuel trim level will be stored in the ECM if it is established as a new basic mixture level
It will become a long term fuel trim correction and results in the correct mixture level immediately after starting, even when the HO2S has had sufficient time to heat up
Now having some idea of what trim is, you will see the necessity of repairing any problem sensors ,air leaks ,vacuum leaks
You will also probably understand the reason of why an engine after running short runs ( city driving) feels that it gets more power and better economy after 1/2 hour on the open highway
The ECM resets the trim to the new load power settings and that becomes the new trim

System voltage malfunction. Check battery and charging system. If OK check wiring for intermitent short circuit.

P2626 O2 Sensor Pumping Current Trim Circuit/Open
P0171 System too Lean (Bank 1)
P0170 Fuel Trim Malfunction - Bank 1.

Try changing the fuel filter first. Then you will have to clear the code with a jumper.

Check here:
http://www.troublecodes.net/Kia/

hello this is a fuel trim malfunction bank sensor 1 meaning O2 sensor is malfunctioning .Oxygen sensor

Kia:Heated Oxygen Sensor Bank 2 Sensor 1 Transition
I just had this happen on mine. I will reset code and wait.
If it comes on and it was not a fluke I will replace the O2
sensor on Bank 2 which I think is the rearward bank on our
2.x 6 cylinder Optima 2002 SEV6.

P0130 Oxygen Sensor Circuit Malfunction - Bank 1 Sensor 1.
P0131 Oxygen Sensor Circuit Low Voltage - Bank 1 Sensor 1.
P0132 Oxygen Sensor Circuit High Voltage - Bank 1 Sensor 1.
P0133 Oxygen Sensor Circuit Slow Response - Bank 1 Sensor 1.
P0134 Oxygen Sensor Circuit No Activity detected - Bank 1 Sensor 1.
P0135 Oxygen Sensor Heater Circuit Malfunction - Bank 1 Sensor 1

It is a fuel trim malfuntion.
P0170 Fuel Trim Malfunction - Bank 1.

Most of the time a simple fuel filter change will fix the problem.

You will need to clear the code with a jumper.

http://www.troublecodes.net/Kia/

DO NOT disconnect the battery for 20 seconds or you will have to recode your alarm and radio.

Kelly