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Re: 2005 Toyota Prius and Rear O2 sensor (B1 S2)
Posted to Technical Theory Forum on 6/12/2007 14 Replies

hey Peter,

this is normal operation for a rear sensor. the PCM now runs a check on what you have mentioned.

the test was added an in attempt to make it tougher for o2 simulators, its fairly easy to make a sensor that hangs around .750 volts and have it dro... Login to read more.

14 Replies Received (View Replies)