Report "I have had P0171 on my 1999 Camry 4 cyl since about 4 months. Felt nothing wrong with driving around. Checked the fuel cap - found good. Replaced the air filter, coolant temperature sensor, thermostat. The Check Engine light comes ON after driving for 3-5 miles at >40 mph. Sometimes P1130 also comes ON. What could be wrong? I have got a ELM327 adapter and plugged into the OBD jack underneath the steering and can read the codes using Torque on an android phone. Whats wrong with my car? Any one to help please..?"