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The O2 Sensor Problem That Doesn't Go Away!!!

This is a discussion on The O2 Sensor Problem That Doesn't Go Away!!! within the General Help forums, part of the LSx Technical Help Section category; ...

  1. #1
    Junior Member
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    Chameleon
    1998 Pontiac Trans Am

    Angry The O2 Sensor Problem That Doesn't Go Away!!!

    Ok, here's the deal. I've had O2 sims for quite ~2 years then I received a P0160 code (HO2S Circuit Insufficient Activity Bank 2 Sensor 2). I moved the O2 sim to the other side and received a P0140 code (HO2S Circuit Insufficient Activity Bank 1 Sensor 2). I figured this was the end of the problem so I bought a new O2 sim and replaced it on 6/12/06. A few weeks went by and now I have 3 codes P0154 (HO2S Circuit Insufficient Activity Bank 2 Sensor 1), P0155 (HO2S Heater Performance Bank 2 Sensor 1), and P1153 (HO2S Insufficient Switching Bank 2 Sensor 1). What is the deal? Could I have bought a bad O2 sim or is something else wrong here? I also did some research and think maybe I should get a tune. Will a tune fix this? I've posted my mods below.

    Installed Mods

    Engine
    GM WS-6 Ram Air Hood
    BG Ram Air Modification (True Ram Air)
    Removed Baffles
    Sealed Air Lid
    Holley PowerShot Filter
    SLP High Flow Lid
    Borla cat-back Exhaust
    QTECH 3" Electric Cutout
    Jet-Hot Coated Hooker LTís
    Custom Y-pipe w/carsound cats
    Hypertech Power Programmer III (w/o Power Tuning)
    Hypertech 160 Degree Thermostat
    Modified Coolant (25 Dexcool/75 Water with Purple Ice additive)
    Throttle Body Bypass Mod
    Custom PCV Mod
    Bosch Platinum +4 Spark Plugs
    MSD Ignition 8.5mm Plug Wires
    Royal Purple 5w-30 Synthetic Blend
    K&N Performance Gold Oil Filter (oversized)

    Drivetrain
    Hurst Billet/Plus Competition Short-Throw Shifter
    Centerforce Dual Friction Clutch
    Centerforce throw out bearing
    Heavy Duty Pilot Bearing
    Mcleod Adjustable Master Cylinder
    Updated 145 Slave Cylinder
    Drill Mod
    Bulletproof T-56
    Upgraded Synchronizers
    Carbon Fiber Synchronizer Rings
    Steel Shift Forks
    Removed CAGS
    Richmond 3.73 Rear Gears
    Ratech Install Kit
    TA Performance Girdle
    TA Performance Stud Kit

    Chassis/Suspension
    BMR Tubular Subframe Connectors
    BMR Shock Tower Brace
    BMR Lower Control Arms
    Prothane Transmission Mount
    Prothane Torque Arm Mount
    Prothane Front Sway Bar Mounts
    Prothane Rear Sway Bar Mounts & endlinks

    Wheels/Tires
    18X9.5 Triple Chrome Plated Z06 wheels
    Nitto NT 555 Extreme Performance Tires

    Thanks,

    Jeff

  2. #2
    Senior Member
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    Something else is going on - rear 02 SIMs, even if bad shouldn't affect Sensor 1 codes - right?
    Last edited by 2001NBMZ28; 07-25-2006 at 02:51 PM.

  3. #3
    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
    01 SS

    Did you reset the pcm when you instailed the new sim? If you get it tunned you can have the trouble codes deleted out, so yea thats one permanent way too fix it.
    I would say you got a sour 02 sim.
    J
    2001 SS, Its not the car its the Driver that matters....

  4. #4
    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    The sim has nothing to do with your fronts. Those are common codes to have with LT's. The sensor is further downstream than the stock location. Why yours went so long before throwing the heater and switching codes is beyond me. I started throwing them almost immediately after my header install.

  5. #5
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    Chameleon
    1998 Pontiac Trans Am

    Is there any way to fix this? If I replace the front O2 sensor will it just keep happening? Is it bad if I leave the codes unresolved (ex. delete them out and not worry about them)?

  6. #6
    Junior Member
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    May 2006
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    California
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    Chameleon
    1998 Pontiac Trans Am

    Ttt

  7. #7
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    black
    01 camaro ss

    Quote Originally Posted by jdubbs928 View Post
    Is there any way to fix this? If I replace the front O2 sensor will it just keep happening? Is it bad if I leave the codes unresolved (ex. delete them out and not worry about them)?
    You should replace the front sensors with bosh 13111. These are corvette 02 sensors. Many guys over at ls1tech.com , use this. Log on and do a search.

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