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Look at the engine with the pulley wheels and belts nearest to you, looking along the length of the engine. On a 'V' type engine Bank 1 is always the Left side and Bank 2 is always the Right side. Inline engines only use Bank 1.
Sensor 1 is the one nearest the engine, before the catalytic converter. Sensor 2 is furthest from the engine, after the catalytic converter. Sensor layout is the same on both sides.
bank 1 is driver side cat sensor. if one sensor goes it can get false readings on others. it could just be a seal on one of the connectors, but to find the faulty sensor is seals are fine. you need to find out the resistance on the sencore the live the negative and the signal wire are and use a meter with the engine running connect the meter to the wires with paper clips in the back of the plug with it connected it needs to be on the signal and the negative, the resistance should go up and down in resistance with engine output rev engine slowly if it moves smooth then its fine, if its not then its that sensor at fault. you can do this if you have a code reader and remove sensors one at a time till you only get one code left then the one you removed is the sensor at fault.
replace your VCT sencor (variable cam timing) on right bank easy to get to very front of valve cover on top with wire conector un plug pull rubber boot and ther is only 1 8mm bolt loosen it and pull VCT from valve cover and replace just as pulled
This might help. It looks like you O2 sencor had gone bad or the signal has and causing multiple mis fire. according to your codes.
PO171 System too Lean (Bank 1 PO174 System too Lean (Bank 2) PO300 Random/Multiple Cylinder Misfire Detected Causes of PO300 Fuel injectors, related wiring, sensors and computer issues Running out of gas, or poor fuel quality Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine Incorrect Fuel Pressure EGR system concerns I'ld start with chaning the O2 sensors first but sheck for bad wire connection. Hope this helps and good luck
If that's the case, it's your secondary O2 sensor on the #2 bank of cylinders (this is usually the driver's side of the engine). That oxygen sensor would be the one after the catalytic converter, on the driver's side.
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