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Re: 2005 Toyota Prius and Rear O2 sensor (B1 S2)
Posted to Technical Theory Forum on 6/12/2007

Hey Robert,

[...trimmed text...]

Are you trying to say that the PCM will check the rear O2 sensor during acceleration by commanding it to go lean and thereby causing the rear O2 sensor to drop to under 200 mV? And that ... Login to read more.