the o2 sensor is located at the left side of the engine towards radiator and is the upper o2.
165.00
P0173 Fuel Trim Malfunction Bank 2. You need to identify where is cylinder number 1. This one will be the bank 1. The bank 2 is the other one. Need to check Air Flow sensor Fuel Pressure psi (47-50) psi. Incorrect Fuel Engine Coolant Temperature sensor ECT sensor Heater Oxygen sensor B2S1 and B2S2 Intake Air Temperature Senso PCM
P1131- lack of 02 B1 S1, lean more numbers P0174 Lean Bank 2 P0301 Misfire P0302 Misfire P1151 H02S B2S1 Lean if that helps i paid about $100 for someone to tell me i needed to pay $873 to get two 02 sensors replaced and a mass air flow sensor replaced because i was getting bad miles/gallon... The car would also have problems when i would sit idoling(aka flashing check enging light)... cant spell sorry.