Question about 2003 Mazda Mazda6

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My car is having difficulty idling, this morning it died on my way to work but started right back up. The check engine light has been on for about 3 weeks. I took it to a garage to have it ran on the machine, it came up with code P2187 Lean O2 sensor on bank 1 and bank 2. I was told that cheap fuel can cause this code and the guy pretty much told me it wasn't worth fixing. The car is having trouble idling, but the guy said if I replaced the O2 sensors it would pretty much just do the same thing again in a few months. How much trouble is it to change O2 sensors and will the problem really keep coming back? I have been using premium fuel the past few months, even before the light came on.

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  • Anonymous Mar 28, 2014

    O2 sensor lazy at idle

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I had that problem, my MAF was dirty so I cleaned it. I have a CAI (Cold air intake) so it was easy for water to get to it, I moved the MAF sensor to a better spot and it stopped my vehicle from Idling at crash

Posted on Mar 31, 2009

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I have 03 mazda 6 bought brand new about 1500 miles in it started dong the same thing 6 trips to the dealership and finally it turned out to be fuel pump 

Posted on Feb 28, 2009

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I have the same problem, I replace the O2 sensors and nothing??????? I have no idea what to do to take care of the problem. I have just ordered a new and improved throttle body. according to the Mazda6 forum, the throttle body on the 03 model was junk. I'll keep you posted.

On a side note, I was transferred to Richmond, VA for Columbus, OH about an 8 hour drive. I have driven back and forth about 4 times with the check engine light on and have had no problems. my email is jburnitz1099@yahoo.com if you find a solution please let me know and I will do the same.

Posted on Jul 27, 2008

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