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HELP with code!?

This is a discussion on HELP with code!? within the Computer & Tuning forums, part of the LSx Technical Help Section category; It's my friends 2000 SS Camaro. Threw a code and the guy at O'reilly's said it was 02 sensor so ...

  1. #1
    Junior Member
    Join Date
    Sep 2005
    Ocala, FL

    Patriot Red
    '94 Z28

    HELP with code!?

    It's my friends 2000 SS Camaro. Threw a code and the guy at O'reilly's said it was 02 sensor so we replaced them both. Code still there so I found that he had a Hypertech so we checked the code. It is P0155 which is Heater Performance Bank 2 Sensor 1. Anyone know what this is if it's not an O2 sensor??? Thanks for your help!!

  2. #2
    Senior Member
    Join Date
    Jul 2005
    Jacksonville, FL
    Could also be a burnt wire/bad connector/blown fuse...does the car have headers? See the diagnostic steps at

  3. #3
    Life in the Fast lane sunsetorangess's Avatar
    Join Date
    Aug 2005
    Bragg NC

    Met. Sunset Orange
    01 SS

    Which sensors did you replace? pre-cat or aft cat? Again what mods are done too the ss? How many miles on vehicle?
    2001 SS, Its not the car its the Driver that matters....

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