Check Engine Light

[sirknee89]

Thanks for looking, Im having trouble with my explorer's check Engine Light. I had the Oxygen Sencors changed a few weeks ,but the light came back on a few days later. This morning I went to Auto Zone and they put a code reader on it . The 2 Trouble Codes ---TroubleShooting PO174 & PO171 on the read out, it said- The PCM has determined that during testing, the fuel system for bank 2 was too lean. ( Bank 1 idenified the lacation of the cylinder #1, while bank 2 idenified the cylinder on the opposite bank ). Both Trouble Codes said the same thing .Can someone tell me in plain english what the 2 trouble Codes mean. Thanks

 

[Blee1099]

Try cleaning your Mass Air flow sensor.. Here's a link on how to.. Dead Link Removed