ARE THE 4 HO2S O2 SENSORS ON THE DISCO 2 THE ...

  • Tiny
  • jaredturner
  • 2003 Land Rover Discovery 2
  • 113,000 miles

Are the 4 HO2S (O2) Sensors on the Disco 2 the same or are the 2 pre-catalytic different than the post-catalytic.

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Friday, March 8th, 2013 AT 9:07 PM

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  • Tiny
  • Wrenchtech
  • Expert
  • 20,244 posts

They are very likely all different. Upstream and down stream are definitely different and sometimes left and right are too.

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Friday, March 8th, 2013 AT 9:21 PM

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