Coon Posted March 22, 2009 Share Posted March 22, 2009 Does anyone know exactly where oxygen sensor bank 1 sensor 1 is located on a 03 toyota highlander? i got a diagram but still not sure if its the one on the front of the engine or the one on the back of the engine down low. Quote Link to comment Share on other sites More sharing options...
Jeremy airjer W Posted March 22, 2009 Share Posted March 22, 2009 Bank 1 is always the same side as the number one cylinder. sensor 1 is always upstream of the catalytic converter. Quote Link to comment Share on other sites More sharing options...
Coon Posted March 23, 2009 Author Share Posted March 23, 2009 thanks...what i ended up doing was disconecting the other one and seeing what the tester said..now getting it out is another prob...it only moves about a half turn and stops...guess im going to have to get it in a garage where they can get it on a lift and put some heat to it... Quote Link to comment Share on other sites More sharing options...
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