As the title states, my car is throwing a P0171 bank 1 running lean... I just hooked up an OBD and used the torque pro app on my phone and tested the codes out of curiosity. I don't know if this is right or wrong, because I have not had an issues with the car recently. When I start it up it revs at 1500-2000 rpm depending on how cold it is and then slowly start to return to idle as the coolant rises, so I'm pretty sure this is normal. Any suggestions?