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P2271 is a diagnostic trouble code (DTC) for "O2 Sensor Sign

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8.8K views 3 replies 3 participants last post by  chem_man  
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#1 ·
Hello All,

I have changed the bank 1 sensor 2 O2 sensor and the code came back within the week. I warrantied the sensor and after a week it came back again. There are no exhaust leaks that I can see. I used a Bosch Exact Fit / Oxygen Sensor from AutoZone. Anyone had the same issue? What was the problem? Should I go with a factory sensor?

Thanks for the input.
 
Discussion starter · #3 ·
The truck was due for an oil change today. I read the codes and there is now a P013A O2 Sensor Slow Response - Rich to Lean (Bank 1 Sensor 2) code. I cleaned the MAP sensor and will be replacing the sensor with an OEM sensor once they open up at 9 with their banker hours lol.
 
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