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Engine Code (p0161-heater Circuit Malf.)


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Recently, my check engine light came on and I took it to Autozone where they will get the OBD2 code for you for FREE. The code is P0161-HO2S Heater Circuit Malfunction, Bank 2 Sensor 2.

I haven't been able to find any more about this malfunction on the internet and would like to know how expensive it is to fix or if it is something I can do myself, been somewhat knowledgeable about car repair?

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I was thinking about it, is that a bad idea? I've done a lot of work on my previous cars and used a Haynes book as a reference. I can't find a Haynes book for my is300 but found the repair manuel for about $200. I was hoping this repair was simple enough that I didn't have to drop the $200 on the book or how ever much the dealer would charge.

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