9/25/2011

Bosch 15730 Oxygen Sensor, Universal Type Fitment Review

Bosch 15730 Oxygen Sensor, Universal Type Fitment
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I ordered one of these for my 2004 Honda Civic Hybrid when the check engine light code told me that the zone 1 oxygen sensor in front of the catalytic converter was bad. I checked the Amazon pulldown menu to be sure it fit my car, and it does - but learned later that this one is for behind the catalytic converter. I installed this sensor and the check engine light never went out. I checked and rechecked my wiring with a meter and my connections were fine. The check engine light came back on immediately after erasing the code with a code reader that I ended up buying to troubleshoot the problem.
When I finally called Bosch, they told me that I need a different type of continuous sensor for the front sensor, and this one only works BEHIND the catalytic converter on my car. The industry calls oxygen sensors in front of the converter "upstream", and those behind the converter "downstream". Most auto parts retailer sites ask you if you want an upstream or downstream sensor, but not Amazon.
You should use the vehicle search on a site like Autozone or O'Reilly to check if this is the correct sensor since many vehicles have more than one oxygen sensor, and they may be different models. I wasted a lot of time sorting this out, and have driven my car for weeks with poor fuel economy (and may have damaged my catalytic converter) because Amazon didn't ask me which of the sensors I needed.

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