po codes po132 & po138

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May 25, 2011 | 07:13 AM
  #1  
I replace sensors 3 time already with oem parts, works fine for about two weeks then ck engine come back on, what could be my problem for the sensors to keep going bad .
thanks for any replys
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May 25, 2011 | 08:46 AM
  #2  
You need a scan tool to properly diagnose the problem by following a troubleshooting tree. As you can see, throwing new and expensive sensors at it is not fixing the problem. P0132= Check the wiring (green/red wire) between the o2 sensor and PCM for a short to voltage. P0138= Check wiring (black/dark green) between o2 sensor and PCM for shorts to voltage.
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