cdbd4214   
   From: Anyolmouse@invalid.invalid   
      
    wrote in message   
   news:018f0354-f39e-4c63-92b3-c4a65b4a6e0d@d1g2000hsg.googlegroups.com...   
   | own a 2001 Tundra 4x4 came on with 4 oxy sensors don't a clue as to   
   | which one to replace . Took it over to Advance auto parts and was told   
   | it was the one closer to the cat convtr.Went to Auto Zone and gave 5   
   | different codes as to what could be the reason for the light to come   
   | on. Are the oxy sensors all the same? or all 4 are different?Coul   
   | someone help me?            Ciao Eduardo   
      
   I don't know about your Tundra but my '99 Tacoma with the V-6 started   
   throwing Oxy sensor (sometimes lean left bank) code. The dealers service   
   records showed they had already been replaced twice by the previous   
   owner(s).   
      
   I read where a dirty MAS sensor could cause problems and promptly   
   cleaned it with some cleaner bought at the corner parts store. Five   
   months now, including a 2,700 mile trip, and no check engine light since   
   cleaning the MAS. You might want to try it before spending a few hundred   
   dollars for an oxygen sensor or two.   
      
   --   
   Anyolmouse   
      
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