WHERE IS LOCATION OF BANK 1 SENSOR 1 O2 SENSOR?...

  • Tiny
  • johnrobitaille
  • 2005 Mercury Mountaineer
  • 140,000 miles

Where is location of bank 1, sensor 1 o2 sensor?
auto zone said there test readings show dem p2195, should I change sensor and where is it. Passenger side or drivers side? I have a 6 cyl

Wednesday, April 10th, 2013 AT 4:23 PM

1 Answer

  • Tiny
  • Wrenchtech
  • Expert
  • 19,541 posts

That is the upstream sensor on the passenger side but a new sensor isn't necessarily going to fix it. It's indicating a lean condition on that side of the engine, not necessarily a bad sensor. It needs to be diagnosed properly and the sensor tested.

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Wednesday, April 10th, 2013 AT 4:31 PM

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