Has anyone here replaced their rear O2 sensor?

I have an 03 V70 with 108k. I had to have the cat replaced at around 94k because the car was real sluggish.

The CEL came on, the reader showed P0037, "HO2S Bank 1, Sen 2, Heater Circuit Low". I reset the light, it stayed off for around 300 miles but its back on.

After inspection, looks like it might be a little hard to get at with a standard wrench. Do you need a "stubby" open end to replace it? Other than getting it out, looks just like an OEM plug.

Should I buy a direct replacement for about $180 or a generic and splice the plug for about $70?

Anything else I am missing on this or helpful hints?

Thanks in advance for your help.

 

Direct replacement only.
Get your self an O2 sensor socket.

 

thanks Tech

 

As luck would have it, the CEL went off the day I received the O2 sensor from FCP Groton. Should I wait to see if it comes back on?

 

You could it would not hurt.

 

I had both of my O2 sensor go on me and I first replaced the front with a generic one that comes attached with the connector. Works really well. Front code went away and hasnt come back in 4 months now.

Going to replace the rear one (since i still have a p0037 code) this week end with a generic.

Direct OE replacements are preferable but not necessary. I have bought many generic parts for various cars including volvos and they work just fine as long as it is specified that they will fit your car made-model and submodel.

Why spend $180 when you can spend $50 for the same part. Most of the times they dont have a brand. But just from my experience, the generics have been good. Others might have had some bad experiences. Fact is not many people would advertise that they use a generic brand.