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  1. 10-01-2005, 12:48 PM #1
    Tx_Rice_Hunter
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    Need a code translated

    The SES light came on in my car yesterday so I went up to AutoZone to get the code pulled. The scanner said P0430 and was scrolling something about "Catalyst System Efficiency Below Threshold (Bank 2)". Does this mean one of my cats went out or is it an 02 sensor? Any help on what this code refers to would be great help. TIA.
    Last edited by Tx_Rice_Hunter; 10-01-2005 at 01:01 PM.
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  2. 10-01-2005, 01:06 PM #2
    Mr. Luos
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    Cat I would think.

    I was getting that code as well with hi-flow cats.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.
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  3. 10-01-2005, 01:17 PM #3
    Tx_Rice_Hunter
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    Good thing I just remembered I still have the 02 sensors and cats from my Z28 from when me and my friend put the pacesetters on it.
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  4. 10-01-2005, 01:19 PM #4
    Mr. Luos
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    Red Tint Jewelcoat
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    It could be the rear O2 as well.

    Basicly that code is saying that the rear O2 isn't reading what it should. Either because of the cat or the sensor is jacked.

    I just had those rear O2 codes deleted from the PCM.
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  5. 10-01-2005, 03:05 PM #5
    Tx_Rice_Hunter
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    I had the scanner erase the codes and the code hasnt popped up again yet, hopefully it was a fluke.
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  6. 10-01-2005, 09:59 PM #6
    SeVeReDiStOrTiOn
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    05 Wrangler
    00 Z28 sold :-(

    seems to be a common prob...i have the p0420 code, driver side cat.
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  7. 10-03-2005, 06:47 AM #7
    NH Camaro Z28
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    If you go to an obd ii website for any vehicle 1996 and up, you can look up codes for GM vehicles.
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