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Re: 2005 Sienna- firing order/ #1 cylinder location
after installing the sensor yesterday and driving it last night I never checked I just assumed it was the same code and the cheap sensor quit already. So I went and checked, its a different code. P0156 o2 Circuit ( Bank 2, Sensor 2 ) stored twice. My original post was P0051 HO2S Heat Control Circuit Low ( Bank 2, Sensor 1 ). that didn't show up before,why do you think replacing the first sensor caused this one to to have trouble code to now and didn't say that before ?, is there some other problem maybe ? How hard is it to get at this one to replace ?
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