please recently i did a scan on my car because the check engine turn on, after the engine get worn, the tcs light also turn on. I did a scan and got the

error codes P0172 (Fuel System Too Rich Bank ) and
P0170(Fuel Trim Malfunction (Bank 1)

the car is really consuming fuel though run smoothly.

I also noticed the rpm is high

kindly help if any info

Did you remove the thermostat?

Do you have black smoke coming out from your tail pipe? And also your car is due for tune up I, e changing of spark plugs, servcing of injector noozles, checking of fuel pump pressure, checking of fuel filter if its clogged up but answer my question first then I would take the rest up from there

Thank you all for your help.

@Chiebube, no i did not remove the thermostat.

@Mayor2013,

there is no black smoke, infact the car run smoothly but consume fuel. i have serviced the injector nozzles, change the spark plug and the ignition coils (6).

though i have not check the fuel pump pressure.

Then a lot needs to be checked. Where those the only codes you got??

yes

Any previous work done on the car??

yes, the head gasket was replace after overheating