2003 Land Rover Discovery 2 4 Ho2s O2 Sensors On Disco Same Pre Catalytic

2003 LAND ROVER DISCOVERY 2
113,000 MILES
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JAREDTURNER
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  • 1 POST
Are the 4 HO2S (O2) Sensors on the Disco 2 the same or are the 2 pre-catalytic different than the post-catalytic.
Mar 8, 2013 at 9:07 PM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
They are very likely all different. Upstream and down stream are definitely different and sometimes left and right are too.
Mar 8, 2013 at 9:21 PM
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