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Thread: What are codes P0050 155 420 430

  1. 01-23-2007 #1
    C666
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    What are codes P0050 155 420 430

    I am getting a few codes what do they really mean?

    P0050
    P0155
    P0420
    P0430
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  2. 01-23-2007 #2
    EC_Tune
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    P0050, P0155 O2 sensor B1S1 Heater circuit. (check o2 sensor fuses)
    P0420, P0430 Catalyst efficiency (do you have cat converters)
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  3. 03-02-2007 #3
    C666
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    Quote Originally Posted by EC_Tune
    P0050, P0155 O2 sensor B1S1 Heater circuit. (check o2 sensor fuses)
    P0420, P0430 Catalyst efficiency (do you have cat converters)
    The only o2 fuse I see looks good, is there more than one?
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  4. 03-02-2007 #4
    vette_doc
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    DTC P0050 HO2S Heater Control Circuit Bank 2 Sensor 1
    DTC P0155 for HO2S bank 2 sensor 1
    DTC P0420 Catalyst System Low Efficiency Bank 1
    DTC P0430 Catalyst System Low Efficiency Bank 2
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  5. 03-02-2007 #5
    vette_doc
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    it seems to me your bank 2 sensor 1 is bad and cat are removed, is it?
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  6. 03-05-2007 #6
    C666
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    Long tubes and X pipe
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  7. 03-07-2007 #7
    C666
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    That o2 is lazy at cruise? bad o2 or bad connection??
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