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2 weeks later light is back on anyone know what my next step should be?
I am having the same issue. 2000 GTP 93K Miles. Things that have been replaced so far are the Aft O2 sensor, MAP sensor, PCV valve, removed and cleaned throttle body and all lines and replaced EGR. The EGR was a cheap one from E-Bay which may still be the problem. It is going in for a scan on Saturday.
I have read that if all else fails, the PCM may have to be flashed because the parameters will change over 16 years. Anyone have any insight on this?
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