P0171 – System too Lean (Bank 1) is the code I get from the check engine light. I do not know what is causing this code. It used to come on when my fuel level went below a quarter of a tank. Now it comes on after driving about 230 miles. Someone told me the light comes on because the fuel today has more octane then when my car was built. Is this true? What are possible causes or solutions to fix this.
I purchased this car new and have been the only owner. I have kept up regular maintenance of the vehicle, the check engine light is the only issue I have with the vehicle.
Monday, March 4th, 2013 AT 1:52 AM