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    chaseramsey's Avatar
    chaseramsey Posts: 29, Reputation: 1
    New Member
    		  
    #1

    Aug 2, 2011, 08:20 AM
    2003 honda accord
    My check engine light came on so I hooked a code reader up to it and it gave me code 0141 and 0135 so I looked them up and it is the 02 sensor heater circuit malfunction ( bank 1 sensor 1) AND 02 SENSOR heater circuit malfunction bank 1 sensor 2) which one are those? They the downsteam ones? I don't know
    odinn7's Avatar
    odinn7 Posts: 7,691, Reputation: 1547
    Entomology Expert
    		  
    #2

    Aug 2, 2011, 08:30 AM
    Sensor 1 is the one closest to the exhaust manifold and sensor 2 is the one in or closest to the catalytic converter.
    cdad's Avatar
    cdad Posts: 12,700, Reputation: 1438
    Internet Research Expert
    		  
    #3

    Aug 2, 2011, 08:34 AM

    The number 1 sensor is first inline and the number 2 sensor is the second one in your exhaust system. If this is a 6 cylinder then it would be right and left bank respectively.
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