fuel ratio sensor

  1. chaircatmeow
    Thread

    p0420 error code. oxygen sensor bank 1 sensor 1 voltage constant 0.66 volts

    My 06 Prius gave me check engine light. OBDII says it's P0420. catalytic converter below efficiency. My OBD show that: oxygen bank1 sensor 1...
    Thread by: chaircatmeow, Feb 12, 2017, 6 replies, in forum: Gen 2 Prius Main Forum
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