2001 Acura MDX Can't Find oxygen sensor

davegoya · Posted at Mon Sep 01, 2008 1:25 pm

Engine Mechanical problem
2001 Acura MDX 6 cyl Four Wheel Drive Automatic 70000 miles
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My car get scanned and they found a code PO135 and tell me to replace the oxygen sensor1 in bank 1. I bought the sensor and I want to do it my self. But I don't where is this sensor. I saw a few of this sensor in the motor. And I don't wich one I'm going to replace. If you can help me with a diagram. I can appreciate that. Thank you

rasmataz · Posted at Mon Sep 01, 2008 2:09 pm

B1S1 is on the exhaust pipe upstream from the catalytic converter. The other is on the C/Converter.

KHLow2008 · Posted at Tue Sep 02, 2008 5:58 am

Hi davegoya,

It is the primary sensor.