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DTC

rmrmd1956
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rmrmd1956 Member

rmrmd1956

Posted
Posted

My secondary offset drivers side o2 sensor has stripped threads in the cat. It isn't leaking but isn't fully seated (3 threads proud). The OBD port shows the voltage respond correctly to loads but fluxuates at a lower voltage than the other side. .25V-.5V vs .5V-.75V The other 996tt's I've checked run .5V-.75V equal on both sides. My car is a GT2 and has thrown P1155 twice. Is the sensor voltage the cause?

  • 3 months later...
rmrmd1956 Member

rmrmd1956

Posted
  • Author
Posted

No

It was an over voltage code for the passenger primary o2 sensor! It eventually failed with p0050(bad heater) and was replaced under warranty. All is cool.

In case anyone cares!

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