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Shift position indicator light issues
I have an 08 Mazda 6 i4 2.3L automatic. I'm getting blinking on and off from both the position indicator (P, D, R etc) and the gear indicator (1-5). However I'm not noticing any other issues at present. It started after my engine threw a code for the O2 sensor (bank one, sensor one). I replaced the sensor and cleared the check engine light, and I had hoped the random blinking would have stopped as well.
I was not so lucky. It's done it lately again, and I see no correlation to each instance. Once in park it was just blinking. Once going slow at low rpm in third gear. Once on the freeway in 5th. Once shifting from 4th to 5th in a neighborhood. There isn't a rough shift and I have no AT or engine lights on.
Is this the beginning of the end for my tranny, or just a bad wiring connection for the lights behind the dash? My Mazda dealer found nothing.