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I recent came to possess a 2005 mazda 6. It threw three codes p0134-no activity o2 sensor, p2187- stuck lean, p2195 too lean idle. I replaced the O2 sensor and now I am just showing the p2187 and p2195. I have been able to put together that there is probably a vacuum leak, or the pgr valve may...

I recent came to possess a 2005 mazda 6. It threw three codes p0134-no activity o2 sensor, p2187- stuck lean, p2195 too lean idle. I replaced the O2 sensor and now I am just showing the p2187 and p2195. I have been able to put together that there is probably a vacuum leak, or the pgr valve may...